John 9:33

if He were not with God, He would not be able to do anything.

John 3:2

the same came to Him by night, and said to Him, Rabbi, we know that thou hast come a teacher from God; for no one is able to do these miracles, which thou art doing, unless God may he with him.

John 9:16

Then certain ones of the Pharisees said, This man is not with God, because He does not keep the Sabbath. Others said, How is a wicked man able to do such miracles? And there was a division among them.

Acts 5:38-39

And I now say this to you: Stand aloof from these men, and let them alone; for if this counsel or this work be of men, it will come to naught;

Treasury of Scripture Knowledge

Summary

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

Bible References

Were

John 9:16
Then certain ones of the Pharisees said, This man is not with God, because He does not keep the Sabbath. Others said, How is a wicked man able to do such miracles? And there was a division among them.
John 3:2
the same came to Him by night, and said to Him, Rabbi, we know that thou hast come a teacher from God; for no one is able to do these miracles, which thou art doing, unless God may he with him.
Acts 5:38
And I now say this to you: Stand aloof from these men, and let them alone; for if this counsel or this work be of men, it will come to naught;