In the Hezekiah narrative found in 2 Kings 18-20 and Isaiah 36-Isaiaih 39 there is a repeated use of "trust" or "rely on." This article explores the context and content of "trust" in the narratives. Its occurrences elsewhere in Isaiah, Psalms, Proverbs, and other prophetic literature are examined as well, and it can be seen that these point to a consistent pattern of true and false grounds for "trust."