The term CITY OF GOD is composed of two crossword solutions, ZION (4 letters) and HEAVEN (6 letters). ZION is a biblical term for Jerusalem, the capital of Israel, and is often used to refer to the Promised Land. HEAVEN is a term used in many religions to refer to a spiritual realm or afterlife. Together, these two words form the phrase City of God, which is a reference to the heavenly city described in the Bible.