'Thirteen' in the Bible

and have brought near a burnt-offering, a fire-offering, a sweet fragrance, to Jehovah; thirteen bullocks, sons of the herd, two rams, fourteen lambs, sons of a year; perfect ones they are;

and their present, flour mixed with oil, three-tenth deals to the one bullock, for the thirteen bullocks, two-tenth deals to the one ram, for the two rams,