בִּנְדָבָ֥ה אֶזְבְּחָה־לָּ֑ךְ א֤וֹדֶה שִּׁמְךָ֖ יְהוָ֣ה כִּי־טֽוֹב׃
With a freewill-offering will I sacrifice unto Thee; I will give thanks unto Thy name, O LORD, for it is good.
Read kabbalistic (mystical) interpretation of Psalms 54:8: and classical mystical sources.