No Weapon

Todd Dulaney quotes Isaiah 54:17 directly as the song's entire refrain: "no weapon formed against shall prosper." The prophecy's original promise to a rebuilt Jerusalem gets repeated here with no added commentary, the verse trusted to carry the song on its own.

"Through the fire, through the flood, through the valley, through the mud, I won't worry, I won't fear" lists specific kinds of hardship before the refrain answers them, rather than promising the hardship won't come at all. "And when I think that I can't make it, I'm reminded You won't fail" echoes Romans 8:31's question, "if God is for us, who can be against us?" — confidence placed in God's track record rather than in the absence of difficulty.