Numbers 6:21

6:21 “This is the law of the Nazirite who vows to the Lord his offering according to his separation, as well as whatever else he can provide. Thus he must fulfill his vow that he makes, according to the law of his separation.”

Numbers 7:89

7:89 Now when Moses went into the tent of meeting to speak with the Lord, he heard the voice speaking to him from above the atonement lid that was on the ark of the testimony, from between the two cherubim. Thus he spoke to him.