30 They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?
30 So they asked him, "What sign then will you give that we may see it and believe you? What will you do?
30 So they said to him, "Then what sign do you do, that we may see and believe you? What work do you perform?
30 They waffled: "Why don't you give us a clue about who you are, just a hint of what's going on? When we see what's up, we'll commit ourselves. Show us what you can do.
30 Therefore they said to Him, "What sign will You perform then, that we may see it and believe You? What work will You do?
30 They answered, "Show us a miraculous sign if you want us to believe in you. What can you do?
Matthew Henry's Commentary on John 6:30
Commentary on John 6:28-35
(Read John 6:28-35)
Constant exercise of faith in Christ, is the most important and difficult part of the obedience required from us, as sinners seeking salvation. When by his grace we are enabled to live a life of faith in the Son of God, holy tempers follow, and acceptable services may be done. God, even his Father, who gave their fathers that food from heaven to support their natural lives, now gave them the true Bread for the salvation of their souls. Coming to Jesus, and believing on him, signify the same. Christ shows that he is the true Bread; he is to the soul what bread is to the body, nourishes and supports the spiritual life. He is the Bread of God. Bread which the Father gives, which he has made to be the food of our souls. Bread nourishes only by the powers of a living body; but Christ is himself living Bread, and nourishes by his own power. The doctrine of Christ crucified is now as strengthening and comforting to a believer as ever it was. He is the Bread which came down from heaven. It denotes the Divinity of Christ's person and his authority; also, the Divine origin of all the good which flows to us through him. May we with understanding and earnestness say, Lord, evermore give us this Bread.