1-chronicles 16:39

Zadok the priest - Both Zadok and Abiathar were high priests at this time: the former David established at Gibeah, or Gibeon, where the ark had been all the days of Saul; and the latter he established at Jerusalem, where the ark now was: so there were two high priests, and two distinct services; but there was only one ark. How long the service at Gibeon was continued we cannot tell; the principal functions were no doubt performed at Jerusalem.

This is the first mention that we have of Gibeon as the place at which the tabernacle of the congregation now rested. Previously it had been at Nob 1 Samuel 21:1-6, from where it was removed probably at the time of the slaughter of the priests by Doeg 1 Samuel 22:18-19. It is uncertain whether Gibeon was regarded as a "high place" before the transfer to it of the tabernacle: hut thenceforth, until the completion of Solomon's Temple, it was the "great high place" 1 Kings 3:4 - a second center of the national worship which for above 50 years was divided between Gibeon and Jerusalem.

16:39 Zadok - The chief - priest at Gibeon, where the tabernacle and altar made by Moses still were, where also the ordinary sacrificeswere offered, and the stated worship of God was performed, as theextraordinary worship was before the ark upon great occasions, as whenGod was consulted, which was to be done before the ark and by thehigh - priest, who was Abiathar.