The murmuring Jews: V. 41. The Jews then murmured at Him because He said, I am the Bread which came down from heaven. V. 42. And they said, Is not this Jesus, the son of Joseph, whose father and mother we know? How is it, then, that He saith, I came down from heaven?
V. 43. Jesus therefore answered and said unto them, Murmur not among yourselves. V. 44. No man can come to Me except the Father which hath sent Me draw him; and I will raise him up at the last day.
At this point the Jews started to grumble, to murmur among themselves, to express their disapproval. The idea that this man should Himself be that wonderful Bread which had come down from heaven seemed preposterous to them. They could not merely not understand how this could be true, but they believed themselves to be in possession of evidence to the contrary. They were sure that they knew His antecedents, they were acquainted with His mother, they knew the name of His father.
Note: It has always been an offense to the reason of man that God and man are united in the person of Jesus. But the Lord here advises against all murmuring, against all attempts to make the matter plausible to reason.
For no man can come to Christ by His own reason and strength. All brooding and disputing will not work faith in the heart. There must be a drawing on the part of the Father, by whose strength faith is worked in the heart. Without this work on the part of the Father there can be no faith nor any rising to eternal life. That is the origin, the reason of belief in Jesus: the Father draws to the Son; He influences heart and will in such a way that a person accepts Jesus as His Savior and disregards entirely all difficulties which his reason may experience in the understanding of the person of the Savior.
God not only gives the power to come to faith and to choose the good, but He works, creates all good in man and makes him willing. Faith is altogether a work of God.
"What does 'no man' mean? Do you think it refers only to a cow or ass, or some other animal? Rather 'no man' here refers to the entire human race, the whole world, no man excepted, the most powerful, the most holy, the most prudent, the wisest. It is spoken briefly, but it is a powerful phrase, which thrusts down and throws to the ground all that is called human wisdom, reason, judgment, righteousness, and holiness, also religion and worship. For to come to this article and salvation in Christ no wisdom helps, no prudence, no shedding of blood and giving of alms, nor what the entire human generation is able to do with wisdom, with piety and sanctity. For it says: No man can come to Me, except the Father draw him. This should be taught” (Luther, 7, 2286).