Deuteronomy 23:8; Deuteronomy 26:12

8 "The sons of the third generation who are born to them may enter the assembly of the LORD .
12 "When you have finished paying all the tithe of your increase in the third year, the year of tithing, then you shall give it to the Levite, to the stranger, to the orphan and to the widow, that they may eat in your towns and be satisfied.