John Piper's Outline of Zephaniah

1:1-18 announces the coming judgment upon Judah and Jerusalem                                      Verse 4, "I will stretch out my hand against Judah, and against all the inhabitants of Jerusalem." 

2:1-3 calls the nation back to God, and specifically (as it says in verse 3) to "seek righteousness and seek humility." 

2:4-15 Zephaniah announces the judgment that is also coming on the lands that surround Judah: the Philistines to the east (vv. 4–7), Moab and Ammon to the west (vv. 8–11), the Ethiopians to the south (v. 12), and Assyria to the north (vv. 13–15). 

3:1-7 Here Zephaniah turns his attention to Jerusalem again and lengthens the catalogue of God's accusations against her. 

3:8-20 proclaims the conversion of the peoples (v. 9), the conversion and re-gathering of Israel (v. 10), and the glorious future of all the godly as God rejoices over them with gladness.