Genesis 29:34

34Again she conceived and bore a son, and said, “Now this time my husband will be aattached to me, because I have borne him three sons.” Therefore his name was called Levi.
 Levi sounds like the Hebrew for  attached

Numbers 18:4

4They shall join you and keep guard over the tent of meeting for all the service of the tent, cand no outsider shall come near you.
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