כִּֽי־עֲוֺנִ֥י אַגִּ֑יד אֶ֝דְאַ֗ג מֵֽחַטָּאתִֽי׃
For I do declare mine iniquity; I am full of care because of my sin.
Rashi on Psalms
For I relate my iniquity My heart tells me my iniquity. Therefore, I worry, and fear my sin, lest it cause me disaster and pain.