John 2:24
But Jesus did not trust himself to them, since he could read every heart,
1 Peter 1:7
that the genuineness of your faith--a thing far more precious than gold, which is perishable, yet has to be tested by fire--may win praise and glory and honour at the Appearing of Jesus Christ.
1 Peter 4:12
Dear friends, do not be astonished at the fiery trials that you are passing through, to test you, as though something strange were happening to you.
Revelation 2:23
I will also put her children to death; and all the Churches shall learn that I am he who 'looks into the hearts and souls of men'; and I will give to each one of you what his life deserves.