וַיֵּרֹ֖מּוּ הַכְּרוּבִ֑ים הִ֣יא הַחַיָּ֔ה אֲשֶׁ֥ר רָאִ֖יתִי בִּֽנְהַר־כְּבָֽר׃
And the cherubim mounted up—this is the living creature that I saw by the river Chebar.
Read kabbalistic (mystical) interpretation of Ezekiel 10:15: and classical mystical sources.