Numbers 7:89
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 cherubim: and he spake unto him.
Numbers 16:31
And it came to pass, as he had made an end of speaking all these words, that the ground clave asunder that was under them: