Albert Barnes' Notes on the Whole Bible - John 6:29
This is the work of God - This is the thing that will be acceptable to God, or which you are to do in order to be saved. Jesus did not tell them they had nothing to do, or that they were to sit down and wait, but that there was a work to perform, and that was a duty that was imperative. It was to believe on the Messiah. This is the work which sinners are to do; and doing this they will be saved, for Christ is the end of the law for righteousness to everyone that believeth, Romans 10:4. read more
The Pulpit Commentary - John 6:29
Christ's reply really solves the great problem which had long perplexed the schools of Palestine, and often, and even to the present hour, is dividing into two hostile camps the Christian Church. Jesus answered and said to them, This is the work of God. Observe, not "works," but "work"—the one work which is the germ and the consummation of all the partial workings which are often made substitutes for it. There is "one work" which God would have man do. Jesus admits that there is something to... read more