The famous name meaning 'with us is God,' given to the child in Isaiah's prophecy to King Ahaz as a sign of divine deliverance. Isaiah 7:14 introduces the name in the context of assuring Judah that Syria and Ephraim's threat will fail before the child grows up. In 8:8 and 8:10, 'Immanuel' becomes a declaration of trust—'God is with us'—affirming divine presence to protect Jerusalem from invasion. The name functions both as a prophetic sign-child's designation and as a confessional formula expressing confidence in God's protective presence. Christian tradition later sees messianic significance in this name, though the immediate context addresses 8th-century Judah.