A personal name meaning 'Yahweh is my brother,' from ach (brother) and Yah (the divine name). Most notably a prophet who challenged Jeroboam.
Ahijah the Shilonite tore his cloak into 12 pieces as a sign to Jeroboam (1 Kings 11:29-39) and later prophesied the dynasty's doom. The name 'Yahweh is my brother' points to the intimacy of covenant -- and ultimately to Christ who calls believers His brothers (Matthew 12:50; Romans 8:29).