Psalms 78:41 Kabbalah

וַיָּשׁ֣וּבוּ וַיְנַסּ֣וּ אֵ֑ל וּקְד֖וֹשׁ יִשְׂרָאֵ֣ל הִתְווּ׃

And still again they tried God, And set bounds to the Holy One of Israel.

Read kabbalistic (mystical) interpretation of Psalms 78:41: and classical mystical sources.