John 9:33

if this one were not from God, he were not able to do anything.'

John 3:2

this one came unto him by night, and said to him, 'Rabbi, we have known that from God thou hast come -- a teacher, for no one these signs is able to do that thou dost, if God may not be with him.'

John 9:16

Of the Pharisees, therefore, certain said, 'This man is not from God, because the sabbath he doth not keep;' others said, 'How is a man -- a sinful one -- able to do such signs?' and there was a division among them.

Acts 5:38-39

and now I say to you, Refrain from these men, and let them alone, because if this counsel or this work may be of men, it will be overthrown,

Treasury of Scripture Knowledge

Summary

If this man were not of God, he could do nothing.

Bible References

Were

John 9:16
Of the Pharisees, therefore, certain said, 'This man is not from God, because the sabbath he doth not keep;' others said, 'How is a man -- a sinful one -- able to do such signs?' and there was a division among them.
John 3:2
this one came unto him by night, and said to him, 'Rabbi, we have known that from God thou hast come -- a teacher, for no one these signs is able to do that thou dost, if God may not be with him.'
Acts 5:38
and now I say to you, Refrain from these men, and let them alone, because if this counsel or this work may be of men, it will be overthrown,