"I lie down and sleep; I wake again, because the LORD sustains me." (Psalm 3:5)
"Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough trouble of its own." (Matthew 6:34)
"when you lie down, you will not be afraid; when you lie down, your sleep will be sweet" (Proverbs 3:24)
"Cast all your anxiety on him because he cares for you." (1 Peter 5:7)
"I will lie down and sleep in peace, for you alone, O LORD, make me dwell in safety." (Psalm 4:8)
"In vain you rise early and stay up late, toiling for food to eat-- for he grants sleep to those he loves." (Psalm 127:2)
"Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid." (John 14:27)
"Do not be anxious about anything, but in everything, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus." (Philippians 4:6-7)