"Therefore we do not lose heart. Though outwardly we are wasting away, yet inwardly we are being renewed day by day. For our light and momentary troubles are achieving for us an eternal glory that far outweighs them all. So we fix our eyes not on what is seen, but on what is unseen. For what is seen is temporary, but what is unseen is eternal." (2 Corinthians 4:16-18)
"Why are you downcast, O my soul? Why so disturbed within me? Put your hope in God, for I will yet praise him, my Saviour and my God." (Psalms 42:5-6)
"Praise be to the God and Father of our Lord Jesus Christ, the Father of compassion and the God of all comfort, who comforts us in all our troubles, so that we can comfort those in any trouble with the comfort we ourselves have received from God. For just as the sufferings of Christ flow over into our lives, so also through Christ our comfort overflows." (2 Corinthians 1:3-5)
"Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom.
He gives strength to the weary and increases the power of the weak.
Even youths grow tired and weary, and young men stumble and fall;
but those who hope in the LORD will renew their strength.
They will soar on wings like eagles; they will run and not grow weary, they will walk and not be faint." (Isaiah 40:28-31)