'Brace' in the Bible

After hoisting the skiff [on board], they used support lines [for frapping] to undergird and brace the ship’s hull; and fearing that they might run aground on the shallows of Syrtis [off the north coast of Africa], they let down the sea anchor and lowered the sails and were driven along [backwards with the bow into the wind].

So then, strengthen hands that are weak and knees that tremble.

So prepare your minds for action, be completely sober [in spirit—steadfast, self-disciplined, spiritually and morally alert], fix your hope completely on the grace [of God] that is coming to you when Jesus Christ is revealed.