לְעֹ֘שֵׂ֤ה נִפְלָא֣וֹת גְּדֹל֣וֹת לְבַדּ֑וֹ כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃
To Him who alone doeth great wonders, For His mercy endureth for ever.
Read Kabbalistic (mystical) interpretations of Psalms 136:4: Zohar and classical Jewish mystical sources, free online.