מַגִּ֣יד דברו [דְּבָרָ֣יו] לְיַעֲקֹ֑ב חֻקָּ֥יו וּ֝מִשְׁפָּטָ֗יו לְיִשְׂרָאֵֽל׃
He declareth His word unto Jacob, His statutes and His ordinances unto Israel.
Read kabbalistic (mystical) interpretation of Psalms 147:19: and classical mystical sources.