'Third' in the Bible

you shall not bow down yourself to them, nor serve them; for I, Yahweh, your God, am a jealous God, visiting the iniquity of the fathers on the children, and on the third and on the fourth generation of those who hate me;

The children of the third generation who are born to them shall enter into the assembly of Yahweh.

When you have made an end of tithing all the tithe of your increase in the third year, which is the year of tithing, then you shall give it to the Levite, to the foreigner, to the fatherless, and to the widow, that they may eat within your gates, and be filled.