According to Daniel, King Nebuchadnezzar had dreams that upset him and made it hard for him to sleep. These dreams were important, and he wanted to understand what they meant.
Daniel 2:1: And in the second year of the reign of Nebuchadnezzar Nebuchadnezzar dreamed dreams, wherewith his spirit was troubled, and his sleep brake from him.
This verse describes peaceful rest and sleep without fear, contradicting Daniel 2:1 where Nebuchadnezzar's sleep was disturbed by dreams.
Proverbs 3:24: When thou liest down, thou shalt not be afraid: yea, thou shalt lie down, and thy sleep shall be sweet.