John 2:25

and because He did not need anyone to testify about man; for He Himself knew what was in man.

But perceiving their thoughts, Jesus said, “Why are you thinking evil things in your hearts?

Jesus, knowing in Himself that His disciples were complaining about this, asked them, “Does this offend you?

But there are some among you who don’t believe.” (For Jesus knew from the beginning those who would not believe and the one who would betray Him.)

For He knew who would betray Him. This is why He said, “You are not all clean.”

Treasury of Scripture Knowledge

And needed not that any should testify of man: for he knew what was in man.

that You look for my wrongdoing
and search for my sin,

Jesus, knowing in Himself that His disciples were complaining about this, asked them, “Does this offend you?

For He knew who would betray Him. This is why He said, “You are not all clean.”