Matthew Poole and continuators on John 13:34

34 A new commandment I give unto you, That ye love one another▪ as I have loved you, that ye also love one another d.

The Commandment of loving one another, is strictly no new Commandment, we find it in the Law of Moses, Levit. 19.18. often pressed in the New Testament, Chap. 15.17. Eph. 5.2. 1 Iohn 4.21. St. Iohn in his first Epistle saith, it is no new Commandment, 1 Iohn 2.7. 2 Epist 6. It is therefore called a new Commandment, either because of the excellency of it; as new seemeth to be taken. Psal. 33.3. Isa. 65.17. Matth. 26.29. or because it is expounded in the Gospel in a new manner, pressed more plainly, and in new Arguments, and urged by a new example of their Lord and Master.

Marginal references: Cha 15.12, 19. 1 Thes 4.9. 1 John 3.23.