הַעַל־אֵ֥לֶּה תִתְאַפַּ֖ק יְהוָ֑ה תֶּחֱשֶׁ֥ה וּתְעַנֵּ֖נוּ עַד־מְאֹֽד׃ (ס)
Wilt Thou refrain Thyself for these things, O LORD? Wilt Thou hold Thy peace, and afflict us very sore?
Read kabbalistic (mystical) interpretation of Isaiah 64:11: and classical mystical sources.