Having experienced freedom from bondage and constituted as Yahweh’s own possession, Israel was expected to function as a contrast community that is free from exploitation and oppression, unlike other city States. But when this basic thrust was lost after a mere 250 years, Yahweh called the prophets to carry his mission forward. Their work consisted of two interconnected themes: denunciation of idolatry and a passionate appeal for social justice. Jesus’ prophetic theologizing has a new basis: Jesus’ experience of God as Abba, Loving Parent. This foundational experience is expressed in terms of the reign of God. Jesus spelt out various aspects of the reign of God through his symbolic deeds followed by clarification of their significance. This prophetic theologizing continues even in our own times - notably by Christian leaders who have a vision in their mission.