Strength in weakness
“You bless all who depend on you for their strength.” (Psalm 84:5 CEV)
His grace is sufficient
“But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly of my weaknesses, so that the power of Christ may rest upon me.” (2 Cor. 12:9 ESV)
He gives power to the faint
“Have you not known? Have you not heard? The Lord is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. He gives power to the faint, and to him who has no might he increases strength. Even youths shall faint and be weary, and young men shall fall exhausted; but they who wait for the Lord shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint.” (Isa. 40:28-31 ESV)
Therefore…
“I can do all things through him who strengthens me.” (Phil. 4:13 RSV)
“For the sake of Christ, then, I am content with weaknesses, insults, hardships, persecutions, and calamities. For when I am weak, then I am strong.” (2 Cor. 12:10 ESV)
“But they who wait for the Lord shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint.” (Isa. 40:31 ESV)
“Finally, be strong in the Lord and in the strength of his might.” (Eph. 6:10 ESV)