כְּרַחֵ֣ם אָ֭ב עַל־בָּנִ֑ים רִחַ֥ם יְ֝הוָ֗ה עַל־יְרֵאָֽיו׃
Like as a father hath compassion upon his children, So hath the LORD compassion upon them that fear Him. .
Read kabbalistic (mystical) interpretation of Psalms 103:13: and classical mystical sources.