Psalms 136:5 Kabbalah

לְעֹשֵׂ֣ה הַ֭שָּׁמַיִם בִּתְבוּנָ֑ה כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃

To Him that by understanding made the heavens, for His mercy endureth for ever.

Read kabbalistic (mystical) interpretation of Psalms 136:5: and classical mystical sources.