2 Bible Verses about Adversity, Purpose Of

And yet ye have forgotten the exhortation which speaketh to you as to sons, My son, despise not thou the chastning of the Lord, nor faint when thou art rebuked of him. For whom the Lord loveth, he chastneth, and scourgeth every son whom he receiveth. If ye endure chastning, God dealeth with you as with sons; for what son is he, whom his father chastneth not?read more.
But if ye are without chastning, of which all are partakers, then are ye bastards and not sons. Moreover we have had fathers of our flesh who corrected us, and we reverenced them: Shall we not much rather be in subjection to the Father of spirits and live? For they, verily, for a few days chastned us as they thought good: but he for our profit, that we may be partakers of his holiness. Now all chastning for the present is assuredly not joyous, but grievous; yet afterwards it yieldeth the peaceable fruit of righteousness to them that are exercised thereby.

Who are kept by the power of God thro' faith unto salvation, ready to be revealed in the last time. Wherein ye greatly rejoice, tho' now for a little while (if need be) ye are in heaviness thro' manifold temptations. That the trial of your faith, which is much more precious than gold, (that perisheth, tho' it be tried with fire) may be found unto praise, and honour, and glory at the revelation of Jesus Christ,read more.
Whom having not seen, ye love: in whom tho' ye see him not, yet believing, ye rejoice with joy unspeakable and full of glory, Receiving the end of your faith, the salvation of your souls.