Sivan A Persian word (Assyr, sivanu, "bricks"), used after the Captivity as the name of the third month of the Jewish year, extending from the new moon in June to the new moon in July (Est 8:9). Skin, Coats Made of (Gen 3:21). Skins of rams and badgers were used as a covering for the tabernacle (Exo 25:5; Num 4:8).