Cross reference
John 2:25
25 and because he didn't need for anyone to testify concerning man; for he himself knew what was in man.
John 13:11
11 For he knew him who would betray him, therefore he said, "You are not all clean."
Matthew 9:4
4 Jesus, knowing their thoughts, said, "Why do you think evil in your hearts?
John 6:61
61 But Jesus knowing in himself that his disciples murmured at this, said to them, "Does this cause you to stumble?
John 6:64
64 But there are some of you who don't believe." For Jesus knew from the beginning who they were who didn't believe, and who it was who would betray him.