God had promised David that He would subdue all his enemies (1Chron.17:10). But that didn’t mean there wouldn’t be any war. The war, in fact, was the means God would most often use to bring about what He had promised. It is the same for David as it had been with Joshua who had led the people into the land of Canaan, to possess it so many years before. Joshua was given incredible promises. His campaign cannot fail. Going with him were all the promises the Lord had made for hundreds of years to the patriarchs. Even more, the God of heaven had sworn to him personally, “Every place on which the sole of your foot treads, I have given it to you, just as I spoke to Moses” (Josh.1:3). But the promises are bound inseparably together with the people going forward. Indeed, the people going to battle is the means God would use to give them possession of the land of promise. And so it is with David. God had made him precious promises, but the battle field was often the means by which these promises were fulfilled.
There are some things we don’t know about the text. Did these events take place chronologically as they appear before us? Or had these battles taken place earlier (see 1Chron.20)? There is also the question of the identity of the man called Goliath in verse 19. Wasn’t Goliath already dead? These are not unimportant questions, but perhaps it is better to spend our time on what we do know rather than speculate about what we don’t. Whenever these events took place, the Holy Spirit was pleased to put them here in our text, in connection with the previous passage. As for Goliath, either it is the first giant’s brother (cf.1Chron.20:5), one of his sons called by his name (v22), or a different warrior of the Philistines called by the same name.
The Christian life is a war. If you find it any differently friend, you are in a fearful place, for the true soldier of Christ is constantly at battle. The are enemies on the outside. Satan wants to destroy us, and he has had thousands of years of practice. We are surrounded by a world that serves and loves him. We are like soldiers making our way through the mine fields. There are traps all around, at times some of our dearest friends fall to the ground dead right before our eyes. Other times we ourselves become entangled in some snare; some of which are so deadly we must leave behind a hand or a foot to escape with our lives.
As if this were not enough, there are enemies on the inside. The believer is constantly at war with his sin. Though new creatures in Christ, our hearts are still infected with that awful disease we inherited from our father Adam. The death blow has been dealt at the cross. But just like a snake can still do much damage even after its head has been severed; or just as a branch having been freshly cut is as good as dead but will take time to be fully drained of its life-sap, so it is with the believers’ indwelling sin and corruption. To let our guard down for one moment is to give ground to the enemy. Our motives deceive us; our hearts deceive us. The Christian hates his sin and is constantly at war with it. Not only in his outer appearance, but in the secret places of his heart, he belongs wholly to the Lord. The true Christian wages war with his sin because it is truly his most hated enemy. Just like David, believers are given wonderful promises of victory. But the victory comes through the battle. There is no victory without it, for Scripture declares, “Through many tribulations we must enter the kingdom of God” (Acts 14:22).
David and his men fought the Philistines because they were at war with Israel (v15). David and his fellow soldiers went out against the Philistines to protect the people. When he was a boy, David delivered his father’s sheep from the paw of the lion and the paw of the bear. Now, as the shepherd of Israel, he delivers God’s people from those who would attack them. Before, he delivered sheep from the mouth of the bear and lion; now he delivers Christ’s sheep from the mouth of the sons of Ammon and the Philistines. David must not only protect the sheep from the foreign enemies on the outside, but from those on the inside; such as Absalom and Shimei. And he learned the hard way that he must at times protect them even from himself. For this reason Paul says to the elders of the church at Ephesus, “Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which He purchased with His own blood.” Indeed, the calling to the ministry of the gospel is a serious and weighty calling. What would we think of a king that wouldn’t protect his people? Even the wicked and ungodly kings of the pagans fought to defend their people. What would we think of David if he sat in his palace and let the Philistines attack the Lord’s inheritance? But to be a minister of the gospel is a much greater and weightier responsibility, for the eternal souls of men are entrusted to our care. It was rightly said, “The labours of the ministry are fitly compared to the toil of men in harvest, to the labours of a woman in travail, and to the agonies of soldiers in the extremity of a battle. We must watch when others sleep.” Flavel goes on, “It is a less hazard, to put an ignorant rustic into a chemist’s shop, to compound and prepare medicines for men’s bodies, than to trust a man, destitute both of faithfulness and prudence, with the dispensation of Christ’s ordinances to men’s souls.”1
How are we to fight the good fight? With what weapons? We are not told in detail here, but we are given instruction in other portions of the sacred pages of God’s holy Word. The Word of God is our chief weapon of attack against the powers and principalities that wage war against us. Our Savior showed us by example in the wilderness how to fight off the attacks of the evil one, drawing His sword from the sheath with the words, “It is written…”. With the sword of the Spirit we are able to fight off temptation. With the promises of God we are equipped to fight off discouragement and despair. Too often we fall in battle because our sword is left undrawn in its sheath. Secondly, we fight the fight of faith through prayer. We have this example also in our Lord Jesus, who often would draw away to the mountain or some other secluded place to communion with the Father. He knew He needed it; and we are not stronger than He. In many ways, prayer is a preventative of evil. If we spent more time on our knees, we would find ourselves stronger and more prepared in the hour of attack. It is through prayer that the the armor of God is to be employed (see Ephesians 6:18). We have not because we ask not. The branch that abides not in the vine will soon wither up. It is through prayer that we are enabled to walk and live in the power of the Holy Spirit. Christ showed us this as well, for it was as He was praying that the Spirit descended upon Him at His baptism (Luke 3:21); and it was after spending much time in prayer in the wilderness that He returned again to Galilee in the power of the Spirit (Luke 4:14). Thirdly, we are to fight our battles by the Spirit. Actually, there is an intimate connection in our Lord’s earthly ministry between all these three—prayer, power, and the Spirit. This is also hinted at even in the furnishings and activity of the Tabernacle, for the incense was to be burned on the alter at the same time that the lamps were trimmed (Exodus 30:7). So too we are filled with the Spirit through prayer: “How much more will your heavenly Father give the Holy Spirit to those who ask Him?” (Luke 11:13). So too, when we pray we are to pray “in the Spirit” (Eph.6:18). Paul declares in Romans 8 that it is only by the Spirit that we are to put to death the deeds of the body (verse 13). We also need each other in our waging war against sin. We see this in our present passage, for David grew weary. We have every reason to think that David would have been a dead man without valiant Abishai coming to his aid. Where would David have been without Nathan the prophet? Though David was king he was not above needing help from other saints. When the author of Hebrews speaks of the deceitfulness of sin, the primary means he mentions in guarding against it is to “encourage one another day after day” (Heb.3:13). The testimony of the Scriptures as well as church history have proven the folly of neglecting or rejecting this precious means God has given us for our spiritual warfare. Lastly, we are to fight the good fight of faith by keeping our eyes on the reward of Christ for faithful service. We have mentioned this earlier; we repeat in brief here. Moses had his eyes fixed on the reward; which enabled him to flee all the passing pleasures of the land of Egypt (Heb.11:26). Our Lord bids us look to the reward for faithful service: “Blessed is that slave whom his master finds so doing when he comes. Truly I say to you that he will put him in charge of all his possessions” (Matt.24:46-47). It has been well said, “The true minister lives less for the present than the future. He has eternity in his eye…He lives and acts, he preaches and prays, for eternity. And millions of ages hence, his life and actions, his sermons and his prayers, may be remembered by millions of beings beside himself, with unutterable joy or grief.”2 What John Flavel spoke upon to fellow ministers applies to all believers: “O sirs! We serve a good Master. He keeps an exact account of all your fervent prayers, of all your instructive and persuasive sermons; and all your sighs, groans, and pantings, with every tear and drop of sweat, are placed like marginal notes [by] your labours in his book, in order to a full reward.”3
1John Flavel, The Character of a Complete Evangelical Pastor Drawn by Christ, quoted in Murray’s Banner Magazine V1, p248, 252.
2From Dana’s, Importance of Seriousness to the Christian Minister, quoted in Banner of Truth Magazine V1 p238.