If you know these things, you will be blessed if you do them.
17. If you know these things. He declares that they are happy, if they know and do these things; for knowledge is not entitled to be called true, unless it produce such an effect on believers as to lead them to conform themselves to their Head. On the contrary, it is a vain imagination, when we look upon Christ, and the things which belong to Christ, as separate from ourselves.
It has generally been taken for granted by commentators that Christ's washing his disciples' feet, and the discourse that followed it, were the same night in which he was betrayed, and at the same sitting wherein he ate the passover and instituted the Lord's supper; but whether before the solemnity began, or after it was all over, or between the eating of the passover and...
Commenting on John 13:1-17
If ye know these things,.... The duties they owed to him, and one another; those kind offices of love and respect to each other; the humility, condescension, and brotherly love, which ought to be in them, and of which he had given them an example: happy are ye if ye do them; for the bare theory, or a mere speculative knowledge of these things, is...