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.
Hebrews 12:10-11
For they disciplined us only a short time, as it seemed proper to them, but He does it for our good, in order that we may share His holy character.
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 3:19
The people whom I dearly love, I always reprove and discipline. So keep on being earnest and once for all repent.