Verse 12. This is my commandment. The peculiar law of Christianity, called hence the new commandment. See Barnes "Joh 13:34".

As I have loved you. That is, with the same tender affection, willing to endure trials, to practise self-denials, and, if need be, to lay down your lives for each other, 1 Jo 3:16.

{m} "This is my commandment" Joh 13:24