In Lamentations 3, Jeremiah describes in great detail the affliction that he suffered (or that the individual he is writing about has suffered). But, in his afflictions and sufferings there is something that he calls to mind.
“The steadfast love of the Lord never ceases; his mercies never come to an end; they are new every morning; great is your faithfulness. ‘The Lord is my portion,’ says my soul, ‘therefore I will hope in him.’”
Jeremiah goes on to say that the Lord will do what he is going to do, therefore we should not complain. Rather, we should wait for him to fulfill his plan and purpose. We should seek him and see his salvation. In the midst of the trial, when the Lord seems absent, we should examine ourselves, repenting of anything in us that is not of God.
Romans 8:28 says, “And we know that for those who love God all things work together for good, for those who are called according to his purpose.” God’s purpose is that we would be conformed to the image of Christ, sharing in Jesus’ glory, partaking of his divine nature. God is making us his sons and daughters.
Hebrews 12:7-8 says, “If you endure chastening, God deals with you as with sons; for what son is there whom a father does not chasten? But if you are without chastening, of which all have become partakers, then you are illegitimate and not sons.” The chastening is hard and no fun, but it yields the righteousness of Christ in us.
We must remember that this is preparation for eternity. This life is a momentary training ground. “For this light and momentary affliction is preparing for us an eternal weight of glory beyond all comparison, as we look not to the things that are seen but to the things that are unseen. For the things that are seen are transient, but the things that are unseen are eternal.” (2 Corinthians 4:17-18)
Therefore, we need to put our faith and trust in God that he knows what he is doing.