Psalms 49:4 Kabbalah

פִּ֭י יְדַבֵּ֣ר חָכְמ֑וֹת וְהָג֖וּת לִבִּ֣י תְבוּנֽוֹת׃

My mouth shall speak wisdom, and the meditation of my heart shall be understanding.

Read kabbalistic (mystical) interpretation of Psalms 49:4: and classical mystical sources.