John 9:33
If this man were not from God, he would not be able to do anything!"
John 3:2
This man came to him at night and said to him, "Rabbi, we know that [you are] a teacher who has come from God, for no one is able to perform these signs that you are performing unless God were with him."
John 9:16
So some of the Pharisees were saying, "This man is not from God, because he does not observe the Sabbath!" Others were saying, "How can a man [who is] a sinner perform such signs?" And there was a division among them.
Acts 5:38-39
And now I tell you, keep away from these men, and leave them alone, because if this plan or this matter is from people, it will be overthrown.