My brethren, count it all joy when ye fall into divers temptations;…

That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ.

1 Peter 1:7 (KJV)

And not only so, but we glory in tribulations also: knowing that tribulation worketh patience.

Romans 5:3 (KJV)

For our light affliction, which is but for a moment, worketh for us a far more exceeding and eternal weight of glory.

2 Corinthians 4:17 (KJV)

And lest I should be exalted above measure through the abundance of the revelations, there was given to me a thorn in the flesh, the messenger of Satan to buffet me.

2 Corinthians 12:7 (KJV)

And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.

2 Corinthians 12:9 (KJV)

Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby.

Hebrews 12:11 (KJV)