וַיֹּ֣אמֶר יְהוָ֔ה הִנֵּ֥ה מָק֖וֹם אִתִּ֑י וְנִצַּבְתָּ֖ עַל־הַצּֽוּר׃
And the LORD said: ‘Behold, there is a place by Me, and thou shalt stand upon the rock.
Read kabbalistic (mystical) interpretation of Exodus 33:21: and classical mystical sources.