Psalm 87

A short, surprising psalm. Rahab (Egypt), Babylon, Philistia, Tyre, and Cush, Israel's enemies and outsiders, are registered by God as "born in Zion." It's an early picture of the nations adopted into God's family (compare Galatians 4:26, Ephesians 2:19). It ends in music: all my springs of joy are in You.

"Singers and pipers will proclaim, “All my springs of joy are in You.”" (Psalm 87:7)