John 13:31

Jesus said: now is the Son of man glorified: the time is at hand, when he shall be glorified by miracles at his death, resurrection, &c. (Witham)

(2.) Because there was something considerable in it, of which he should hereafter know the meaning: "Thou shalt know hereafter what need thou hast of being washed, when thou shalt be guilty of the heinous sin of denying me;" so some. "Thou shalt know, when, in the discharge of the office of an apostle, thou wilt be employed in washing off from those under thy charge the sins and defilements of their earthly affections;" so Dr. Hammond. Note, [1.] Our Lord Jesus does many things the meaning of which even his own disciples do not for the present know, but they shall know afterwards. What he did when he became man for us and what he did when he became a worm and no man for us, what he did when he lived our life and what he did when he laid it down, could not be understood till afterwards, and then it appeared that it behoved him, Heb 2 17. Subsequent providences explain preceding ones; and we see afterwards what was the kind tendency of events that seemed most cross; and the way which we thought was about proved the right way. [2.] Christ's washing his disciples' feet had a significancy in it, which they themselves did not understand till afterwards, when Christ explained it to be a specimen of the laver of regeneration, and till the Spirit was poured out upon them from on high. We must let Christ take his own way, both in ordinances and providences, and we shall find in the issue it was the best way.

Verses 31-35 Christ had been glorified in many miracles he wrought, yet he speaks of his being glorified now in his sufferings, as if that were more than all his other glories in his humbled state. Satisfaction was thereby made for the wrong done to God by the sin of man. We cannot now follow our Lord to his heavenly happiness, but if we truly believe in him, we shall follow him hereafter; meanwhile we must wait his time, and do his work. Before Christ left the disciples, he would give them a new commandment. They were to love each other for Christ's sake, and according to his example, seeking what might benefit others, and promoting the cause of the gospel, as one body, animated by one soul. But this commandment still appears new to many professors. Men in general notice any of Christ's words rather than these. By this it appears, that if the followers of Christ do not show love one to another, they give cause to suspect their sincerity.