John 2:25

and He did not need anyone to testify concerning man [and human nature], for He Himself knew what was in man [in their hearts—in the very core of their being].

Matthew 9:4

But Jesus, knowing their thoughts, said, “Why do you think evil in your hearts?

John 6:61

But Jesus, aware that His disciples were complaining about it, asked them, “Does this cause you to stumble and take offense?

John 6:64

But [still] there are some of you who do not believe and have faith.” For Jesus knew from the beginning who did not believe, and who would betray Him.

John 13:11

For He knew who was going to betray Him; for that reason He said, “Not all of you are clean.”

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

General references

Job 10:6

That You seek my guilt
And search for my sin?
John 6:61
But Jesus, aware that His disciples were complaining about it, asked them, “Does this cause you to stumble and take offense?
John 13:11
For He knew who was going to betray Him; for that reason He said, “Not all of you are clean.”