אֲנִ֥י שָׁכַ֗בְתִּי וָֽאִ֫ישָׁ֥נָה הֱקִיצ֑וֹתִי כִּ֖י יְהוָ֣ה יִסְמְכֵֽנִי׃
Rashi on Psalms
I lay down and slept My heart was clogged from worry and fear.
Radak on Psalms
I laid me down and slept: – I laid me down in safety and slept in peace as a man free from fear.
Rashi on Psalms
I awoke from my worry, because I trusted that the Lord would support me.