1 Timothy 1:18

This charge I commit unto thee, son Timothy. — The nature of the charge which he committed to Timothy must be gathered from the solemn words and thoughts of the foregoing passage — 1 Timothy 1:15. The sum of it was that men should put their whole trust in Him who came into the world to save sinners, and who alone was able to lead them into everlasting life. There is something very solemn in St. Paul’s pressing home this charge to Timothy, and invoking the memory of the prophecies which went before on him. The charge was the last precious heritage, the priceless treasure which the old master, feeling that for him the end was not far distant, would leave to his favourite disciple — his own dear son in the faith. Anxious above measure for the loved group of Asian churches, of which Ephesus was the centre, foreseeing that the present perils and dangers from within and without would rapidly close round the congregations, and placing his greatest earthly hope on the steadfastness and knowledge of his own dear disciple whom he had left there as a shepherd to the sheep, he charges his son Timothy, by the memory of those strange prophetic utterances which, years before, had been made over him (Acts 17:1) in Lystra or Derbe, and which, perhaps, had first induced him to choose the young son of Eunice as his friend and companion, to hold fast the blessed doctrine which taught men to put their whole trust in Jesus Christ.

According to the prophecies which went before on thee. — These prophetic utterances seem to have been not unfrequent in the days of the Apostles, and were among the precious gifts which enriched and encouraged the Church of the first days. We read of them at Jerusalem (Acts 11:27), at Antioch (Acts 13:1), at Corinth (1 Corinthians 14), at Cæsarea (Acts 21:8).

In the case of Timothy they appear to have been farseeing glances into the life and the work and the teaching of the future Christian leader; here the last named — the doctrine and teaching — is especially referred to. The prophecies in question were uttered, no doubt, over him at his ordination, and, possibly, some of them at his baptism.

That thou by them mightest war a good warfare. — Better rendered, that thou in them, &c. St. Paul committed the sacred charge to Timothy concerning the faith in full confidence that, in accordance with those well-remembered glorious predictions which had been made foretelling his future zeal and success in the promulgation of the gospel, that in these — accoutred in these as his spiritual protection and armour — Timothy would wage his warfare against sin and evil.

St. Paul’s words in this verse may be thus paraphrased: I give this charge to you, son Timothy, in accordance with those well-remembered predictions respecting your future steadfastness in doctrine and in life. I remind you now of them, Do not disappoint these grand hopes — these prophecies of your future — but bear them ever in your mind. Equip yourself in them as your spiritual armour, and so armed, fight your Master’s fight against sin and evil — eine gute Ritterschaft, according to Luther.
The war imagery here used St. Paul employs again and again: the good warfare. (Comp. 1 Timothy 6:12.) To the old, tried Apostle a Christian’s life is a warfare in the truest sense of the word: to every believer it is a weary, painful campaign. In the case of the professed teachers a sleepless vigilance was especially demanded.