I will both lie down in peace, and sleep; For You alone, O Lord, make me dwell in safety. (Psalm 4:8)

When you lie down, you will not be afraid; Yes, you will lie down and your sleep will be sweet. Do not be afraid of sudden terror, Nor of trouble from the wicked when it comes; For the Lord will be your confidence, And will keep your foot from being caught. (Proverbs 3:24-26)

Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee. (Isaiah 26:3)

Come to Me, all you who labor and are heavy laden, and I will give you rest. Take My yoke upon you and learn from Me, for I am gentle and lowly in heart, and you will find rest for your souls. For My yoke is easy and My burden is light.” (Matthew 11:28-30)