Jachin

Jachin may refer to:Jachin, a son of Simeon according to , , and , one of the 70 souls to migrate to Egypt with Jacob.Jachin, the first high priest of King Solomon's Temple.The pillar in front of Solomon's Temple named after Jachin. See Boaz and Jachin.
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[Judaic] The name of one of the two pillars near the gate of Solomon's temple. The name means 'certainty, surety, stability'. The name of the other pillar was Boaz.

Jachin yachin (Hebrew) The right-hand pillar set up before the temple of Solomon by Hiram (1 Kings 7:21). From the Qabbalistic standpoint, Jachin is the right pillar of the Sephirothal Tree composed of Hochmah (wisdom), Hesed (mercy), and Netsah (firmness). Its companion Boas (Bo`az), the left pillar, consists of Binah (intelligence), Geburah (strength), and Hod (splendor). Jachin and Boaz together represent the dual manas, or higher and lower ego.

he that strengthens and makes steadfast
  

(he shall establish).
→ One of the two pillars which were set up "in the porch," (1 Kings 7:21) or before the temple. (2 Chronicles 3:17) of Solomon. See: Boaz
→ Fourth son of Simeon, (Genesis 46:10; Exodus 6:15) founder of the family of the Jachinites. (Numbers 26:12)
→ Head of the twenty-first course of priests in the time of David. (1 Chronicles 9:10; 24:17; Nehemiah 11:10)