1 Peter 5:10-11

10 After you have suffered for a little while, the God of all grace, who called you to His eternal glory in Christ, will Himself perfect, confirm, strengthen and establish you. 11 To Him be dominion forever and ever. Amen.

The suffering Peter speaks of here is from the devil. It is that which will cause us pain and agony of the body, the mind, and the spirit; it will be the pain of anxiety, depression, grief, regret, loss or injury—or anything that the devil dreams up. But God will use all our suffering for good. We can be assured by His promise that after “a little while” He will begin to use oursuffering to strengthen us—to strengthen our faith. Hence, when we feel down and in some kind of pain, we must hold on and believe that very soon He will deliver us and strengthen us. For all power is His, and since we are in Him He will pass it on to us.