וַאֲנִ֗י בְּק֤וֹל תּוֹדָה֙ אֶזְבְּחָה־לָּ֔ךְ אֲשֶׁ֥ר נָדַ֖רְתִּי אֲשַׁלֵּ֑מָה יְשׁוּעָ֖תָה לַיהוָֽה׃ (ס)
But I will sacrifice unto Thee With the voice of thanksgiving; That which I have vowed I will pay. Salvation is of the LORD.
Read kabbalistic (mystical) interpretation of Jonah 2:10: and classical mystical sources.