1 Peter 1:7
they are to show that your faith when tested is found to be more precious than gold, which though it is perishable is tested with fire, and they will bring you praise, glory, and honor when Jesus Christ is revealed.
Hebrews 12:10-11
For they disciplined us for a short time and as they thought proper, but he does it for our good, to make us share his holiness.
1 Peter 4:12
Dear friends, do not be surprised that a test of fire is being applied to you, as though a strange thing were happening to you,
Revelation 3:19
I reprove and discipline all whom I love. So be earnest and repent.