1. God called 75 years old Abram (1-3).

When the world after the Babel Tower incident was dark and chaotic, God began a new history of redemption by calling one old man, Abram. It required for Abram a painful separation from his people who were idol worshiping and from his father's household, his comfort zone. It required going to an unknown land trusting in God's guidance alone. If he obeys, God promised him abundant blessings: to make childless Abram into a great nation, a nameless into a great man, a hopeless person into a source of the blessing of all nations through the Messiah, Jesus, his descendant. God is God of hope. He called 75 years old Abram to be the source of blessing for all generations of the entire world. God is mighty who can change a dead person into a blessing. He calls each of us from sin and death with the promise of salvation and blessing too.

2. Abram obeyed God's word (10-20).

How did Abram respond? Abram left, as the Lord had told him. His faith was based on the word of God and not on his calculation. God also promised to give him the land, Canaan where Canaanites were already living in. Yet Abram thanked God, building an altar wherever he went and called God's name many times. He took his fatherless cousin, Lot with him too.