John Trapp on Matthew 22:39

Verse 39. And the second is like unto it] For it hath, 1. The same author. God spake all these words. 2. The same tye. 3. The same sanction and punishment of the violation. 4. It requires the same kinde of love and service: for the love of our neighbour is the service of God. Love thy neighbour as thy self] Now, thou lovest thy self truly, really, fervently, freely, constantly, hiding thine own defects and deformities as much as may be. Thou wouldst have others rejoyce with thee and condole with thee, as occasion serves. Go thou now, and do likewise to others. Howbeit our Saviour strains us up a peg higher, Ioh. 13. 34. His new commandment of the Gospel is, that we love one another, not only as we love our selves, but as he loved us. This forme hath something in it that is more expresse (in which respect partly it is called a new commandment,) and for the incomparable sufficiency of the president is matchlesse, and more full of incitation to fire affection.