It is written in the prophets.. — i.e., in the Book of the Prophets. (Comp. Matthew 2:23; Mark 1:2; Acts 7:42; Acts 13:40.) The immediate reference is to the LXX. translation of Isaiah 54:13, but the same thought runs through other passages of the prophets, as Jeremiah 31:34, and Joel 3:1 et seq.
The words bring out the meaning of the Father’s drawing referred to in John 6:44, and point out the extent of the divine teaching by which “all” are taught, and the personal receptivity and effort by which “every man” hears and learns. The teaching is universal, but it may not be heard, and when heard may not be learnt.
Every man therefore that hath heard. — Better, Every man that hath heard, omitting “therefore,” with the best MSS.
Cometh unto me. — This is co-extensive with the previous hearing and learning. They who had listened for God’s voice would recognise His. They who had been God’s disciples would be His too. (Comp. John 5:46.)