לְדָוִ֗ד מִ֫זְמ֥וֹר חֶֽסֶד־וּמִשְׁפָּ֥ט אָשִׁ֑ירָה לְךָ֖ יְהוָ֣ה אֲזַמֵּֽרָה׃
A Psalm of David. I will sing of mercy and justice; unto Thee, O LORD, will I sing praises.
Read kabbalistic (mystical) interpretation of Psalms 101:1: and classical mystical sources.