Strength passages are often quoted as if they celebrate limitless personal grit. Their repeated pattern is different: human capacity runs out, help is received, and courage becomes the next faithful action rather than a claim of invulnerability.
Isaiah 40:31 is for the weary who wait, 2 Corinthians 12:9 places power alongside weakness, and Joshua 1:9 gives courage in the setting of an assigned responsibility. Use the context to see what kind of strength each passage names.