'Younger' in the Bible

These likewise cast lots over against their brethren the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the chief of the fathers of the priests and Levites, even the principal fathers over against their younger brethren.

David did not complete a census of those younger than 20 years of age, since the LORD had said he would make Israel as numerous as the stars of heaven.