This is a chapter highlighting the reality of our sin nature, as well as the faithfulness of God to protect His promises and show mercy to sinners. The narrative follows Abraham after the events of Sodom and Gomorrah. He’s wandered from a place of fellowship with God and has found himself in a regrettably familiar situation. In a tragic lapse of faith his actions endanger his wife, compromise his witness as a man of God, and threaten to potentially thwart God’s promise of a Messiah. Yet in spite of Abe’s unfaithfulness, God’s unrivaled faithfulness holds firm. His promises remain un-thwarted. His mercy is shown to sinners. And the hope of the gospel is alive.