Numbers 18:21

And, behold, I have given the children of Levi all the tenth in Israel for an inheritance ,.... The tenth part of the produce of the land; of the wheat, barley, oil, and wine; the tenth part of their harvest and vintage; so that though they were the least of the tribes, they had the greatest share of the increase of the land, and that without any labour or expense; the other having but nine parts among them all, and at the charge and labour of manuring, cultivating, &c.; and this they were to have

for their service which they serve, even the service of the tabernacle of the congregation ; see Numbers 18:3 .