חַם־לִבִּ֨י ׀ בְּקִרְבִּ֗י בַּהֲגִיגִ֥י תִבְעַר־אֵ֑שׁ דִּ֝בַּ֗רְתִּי בִּלְשֽׁוֹנִי׃
My heart waxed hot within me; while I was musing, the fire kindled; Then spoke I with my tongue:
Read kabbalistic (mystical) interpretation of Psalms 39:4: and classical mystical sources.