John Calvin's Commentary on the Bible - 2 Timothy 1:6
Verse 6 6For which cause I advise thee The more abundantly that Timothy had received the grace of God, the more attentive (the Apostle intimates) he ought to be in making progress from day to day. It deserves notice that the words “for which cause” introduce this advice as a conclusion from what has been already said. To stir up the gift of God. This exhortation is highly necessary; for it usually happens, and may be said to be natural, that the excellence of gifts produces carelessness, which... read more
Adam Clarke's Commentary on the Bible - 2 Timothy 1:8
Be not - ashamed of the testimony - The testimony of Christ is the Gospel in general, which proclaims Christ crucified, and redemption through his blood. In the sight of the world, there appeared to be reason why a man should be ashamed of this; ashamed of him who was crucified as a malefactor; but, when this Gospel became the power of God to the salvation of every one that believed, it was a subject to exult in. Hence the apostle, Romans 1:16 ; (note), said, I am not ashamed of the Gospel... read more