“And when Moses was gone into the tabernacle of the congregation to speak with him, then he heard the voice of one speaking unto him from off the mercy seat that was upon the ark of testimony, from between the two cherubims: and he spake unto him.”
King James Version (KJV)
7:89 To speak with him - To consult God upon occasion. The mercy - seat - Which Moses standing without the veil could easily hear. And this seems to be added in this place, to shew that when men had done their part, God was not wanting in the performance of his part, and promise. God's speaking thus to Moses by an audible voice, as if he had been cloathed with a body, was an earnest of the incarnation of the Son of God, when in the fulness of time the Word should be made flesh, and speak in the language of the sons of men. That he who spake to Moses was the Eternal Word, was the belief of many of the ancients. For all God's communion with man is by his Son, who is the same yesterday, to - day and for ever.