When you lie down, you will not be afraid; yes, you will lie down and your sleep will be sweet. 

A great windstorm arose, and the waves beat into the boat, so that it was already filling. But He was in the stern, asleep on a pillow.Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.I will both lie down in peace, and sleep; for You alone, O Lord, make me dwell in safety. § For so He gives His beloved sleep.They stoned Stephen as he was calling on God and saying, “Lord Jesus, receive my spirit.” Then he knelt down and cried out with a loud voice, “Lord, do not charge them with this sin.” And when he had said this, he fell asleep. § Absent from the body . . . present with the Lord.