The Greek word “diachorizo”

Limited to Lk. 9:33Lk. 9:33
English: American Standard Version (1901) - ASV

33 And it came to pass, as they were parting from him, Peter said unto Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elijah: not knowing what he said.

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, the Greek verb “diachorizo” meant “depart from” or “separate.”  During the transfiguration of Jesus Moses and Elijah “separated” (departed) from the Lord.