This passage quotes Amos 5:25–27 (Greek version) to show how the people of Israel rebelled against Moses (Acts 7:39–41).
Molech was a Canaanite god to whom human sacrifices were offered (Leviticus 18:21; 20:2–5; 1 Kings 11:7; 2 Kings 23:10; Jeremiah 32:35).
Rephan, a star god identified with the planet Saturn, was worshiped by the Israelites during their wilderness wanderings.