1 Peter 1:7

that your faith being put to a more advantageous proof, than that of gold, which loses by the essay, may redound to your praise and highest honour at the appearance of Jesus Christ:

1 Peter 4:12

My dear brethren, don't be surpriz'd at your being brought as it were to the test of fire; as if some strange thing had happen'd to you.

Treasury of Scripture Knowledge

Summary

The bellows are burned, the lead is consumed of the fire; the founder melteth in vain: for the wicked are not plucked away.

Bible References

The founder

1 Peter 1:7
that your faith being put to a more advantageous proof, than that of gold, which loses by the essay, may redound to your praise and highest honour at the appearance of Jesus Christ:
1 Peter 4:12
My dear brethren, don't be surpriz'd at your being brought as it were to the test of fire; as if some strange thing had happen'd to you.