Albert Barnes' Notes on the Whole Bible - John 13:7
Thou knowest not now - Though he saw the action of Jesus, yet he did not fully understand the design of it. It was a symbolical action, inculcating a lesson of humility, and intended to teach it to them in such a manner that it would be impossible for them ever to forget it. Had he simply commanded them to be humble, it would have been far less forcible and impressive than when they saw him actually performing the office of a servant.Shalt know hereafter - Jesus at that time partially explained... read more
The Pulpit Commentary - John 13:7-8
Jesus answered and said to him, That which I am doing thou knowest not now —thou hast not absolute knowledge of, thou hast not seen through as yet; but after these things , afterwards when I shall have completed my present undertaking, thou ( γνώσῃ ) shalt come by clear proof and full discovery and intimate acquaintance to understand . This is sometimes referred to the subsequent illumination of the Holy Spirit, or even to the higher life of the future world (Luthardt), but the... read more