NEH 12:47

47 During the years that Zerubbabel and I governed the Israeli people, they all contributed the food that the singers and temple gatekeepers needed each day. They gave ◄a tithe/10%► of their crops to the descendants of Levi [who helped the priests], and those descendants of Levi gave ◄a tithe/10%► of that to [the priests, who were] descendants of Aaron [the first Supreme Priest].