Psalm 4:8 In peace I will lie down and sleep, for you alone, LORD, make me dwell in safety.

The Lord protects those whom he knows. Even in sorrow and pain he cares and guides his children the safest way home, often the only way he can get the stubborn heart home. The heart that tries to tear away with so many promises, that will remain unfulfilled. Only heaven will make all dreams come true. Only God can show the way.
Even when sleeping in peace, he will keep watch. There are many dangers. Trusting in God's provision is the only safe passage through space and time.