John 21:17

A third time Jesus put the question: "Simon, son of John, am I dear to you?" It grieved Peter that Jesus asked him the third time, "Am I dear to you?" "Master," he replied, "you know everything, you can see that you are dear to me." "Then feed my much-loved sheep," said Jesus.

John 2:25

and did not need any one's testimony concerning a man, for He of Himself knew what was in the man.

Hebrews 4:13

And no created thing is able to escape its scrutiny; but everything lies bare and completely exposed before the eyes of Him with whom we have to do.

Revelation 2:23

Her children too shall surely die; and all the Churches shall come to know that I am He who searches into men's inmost thoughts; and to each of you I will give a requital which shall be in accordance with what your conduct has been.

Treasury of Scripture Knowledge

Summary

And what can David say more unto thee? for thou, Lord GOD, knowest thy servant.

Bible References

Knowest

John 2:25
and did not need any one's testimony concerning a man, for He of Himself knew what was in the man.
John 21:17
A third time Jesus put the question: "Simon, son of John, am I dear to you?" It grieved Peter that Jesus asked him the third time, "Am I dear to you?" "Master," he replied, "you know everything, you can see that you are dear to me." "Then feed my much-loved sheep," said Jesus.
Hebrews 4:13
And no created thing is able to escape its scrutiny; but everything lies bare and completely exposed before the eyes of Him with whom we have to do.
Revelation 2:23
Her children too shall surely die; and all the Churches shall come to know that I am He who searches into men's inmost thoughts; and to each of you I will give a requital which shall be in accordance with what your conduct has been.