John 15:13,14 - Coke's Commentary on the Holy Bible

Greater love hath no man than this,— "My love to you is stronger than death; for I will lay down my life for you: a greater degree of love than this never existed in the world; this is the love that I bear towards you, and which I recommend as the pattern of your love to one another. Ye are my friends, John 15:14 for whom I will lay down my life, if ye do what I have commanded you." Jesus had commanded them, John 15:12 to love one another, as he loved them: in John 15:13 he informs them, that he loved them so, as to lay down his life for them: wherefore, in this 14th verse, he tells them, he would reckon them his friends, if they laid down their lives, or were ready to lay down their lives, for one another. The plain proposition of this precept might have terrified the apostles; but to insinuate it in the beautiful manner that our Lord has done, was altogether necessary for the direction of those, who, by preaching the gospel, were to put their lives in jeopardy every hour; and who, at last, were to lose their lives in that cause, for the benefit of the world. A commentator on the 14th verse observes, "Mark the condition upon which you are my friends:—if you do what I command you. This is a thunderbolt for Antinomianism."