Verse 19
The fast of the fourth month - To commemorate the taking of Jerusalem; 2Kgs 25:3; Jer 39:2; Jer 52:6, Jer 52:7.
The fast of the fifth - In memory of the ruin of the temple, 2Kgs 25:8; Jer 52:12, Jer 52:13.
The fast of the seventh - For the murder of Gedaliah, Jeremiah 41:1-17.
The fast of the tenth - In commemoration of the siege of Jerusalem, which began on the tenth day of the tenth month; 2Kgs 25:1; Jer 52:4; Eze 24:1, Eze 24:2; and see on Zac 7:3 (note), Zac 7:5 (note).
Cheerful feasts - Ye shall find all your evils so completely redressed, that these mournful fasts shall be turned into joyful feasts.