1. Daniel rebukes King Belshazzar (22-24)
King Belshazzar didn't humbly learn anything from history, that is, from King Nebuchadnezzar's arrogance and pride (20). Rather, he defied God by using the sacred goblets and praising lifeless idols. He didn't honor God who holds all our lives and ways in his hand. So God sent the king a rebuking message. Now Daniel would interpret it for him.
2. The meaning of the handwriting (25-31)
The scary handwriting on the wall was from God: Mene, Mene, Tekel, Parsin. Mene: The king's reign was numbered and now over; Tekel: the king did not weigh up to God's standard; Parsin: Babylon is divided and given to Media-Persia. Daniel was rewarded for the interpretation. But that very night the king lost his life and his kingdom.