God tells Moses to go down from Mount Sinai and confront the Israelites because they have become depraved by worshipping a golden calf. God threatens to destroy them, but Moses pleads for mercy by reminding God of his promises to Abraham, Isaac, and Jacob. God relents from punishing his people.
The psalmist prays for mercy and forgiveness from God, asking for a clean heart and steadfast spirit. He asks not to be cast out from God's presence or denied the Holy Spirit.
The reading from 1 Timothy expresses gratitude to Christ for strengthening Paul and appointing him to preach the good news despite his past sins and persecution of Christians.