Jachin in the Bible Encyclopedia - ISBE

ja'-kin (yakhin, "he will establish"): (1) The 4th son of Simeon (Gen 46:10; Ex 6:15; Nu 26:12). In 1 Ch 4:24 his name is given as "Jarib" (compare the King James Version margin, the Revised Version margin). "Jachinites," the patronymic of the family, occurs in Nu 26:12. (2) Head of the 21st course of priests in the time of David (1 Ch 24:17). It is used as a family name in 1 Ch 9:10, and as such also in Neh 11:10, where some of the course are included in the list of those who, having returned from Babylon, willingly accepted the decision of the lot, and abandoned their rural retreats to become citizens and guardians of Jerusalem (Nah 11:1 f). James Crichton