Some days require courage you do not currently have, and the Bible is unusually specific about where that courage comes from. The instruction is not "be strong" in the sense of summoning something; it is "be strong in the Lord, and in the power of his might" — strength described as a place you stand in rather than a resource you generate.

That distinction runs through this whole shelf. Isaiah 40:31 says strength is renewed by waiting; 2 Corinthians 12:9 goes further and says strength is made perfect in weakness, which is the opposite of every motivational poster built from these verses. Habakkuk 3:19 ends a book of disaster by describing the Lord as the one who makes the feet steady on high places.

The shelf gathers more than a hundred passages, which is more than anyone needs in one sitting. Take one — Isaiah 41:10 is the plainest — and read it before the hard thing rather than after it.