John 2:24
But He would not trust Himself to them, because He knew all men
1 Peter 1:7
so that the genuineness of your faith, which is more precious than gold that perishes even after it is shown by the test of fire to be genuine, may result in your praise and glory and honor at the unveiling of Jesus Christ.
1 Peter 4:12
Dearly beloved, do not be astonished that a test by fire is coming upon you, as though something strange were happening to you,
Revelation 2:23
and I will surely strike her children dead. So all the churches will know that I am He who searches men's inmost hearts, and that I will repay each of you for exactly what you have done.