1 Samuel 22:9

“Then answered Doeg the Edomite, etc.] Josephus f455 calls him a Syrian, and so the Septuagint version; (see <092107>1 Samuel 21:7); being full of enmity to David, and willing to curry favour with Saul, and eager of further preferment, which Saul seemed to promise; and being more forward than the rest of his servants, prevented them and spoke first: (which was set over the servants of Saul): over his herdsmen; (see <092107>1 Samuel 21:7); and said, I saw the son of Jesse coming to Nob to Ahimelech the son of Ahitub; in imitation of Saul, he calls David by way of contempt the son of Jesse; and signifies that what he had to say of him was not by report, but he himself was an eyewitness of his…”

“DOEG ACCUSES AHIMELECH. (Sa1 22:9-16) Doeg . . . set over the servants--Septuagint, "the mules of Saul."”

“Doeg: He is also said to be "the chiefest of the herdsmen that belonged to Saul;" and the Septuagint intimates that he was over the mules of Saul. He may have been what we call the king's equerry or groom. Sa1 21:7; Psa 52:1 \*title Psa 52:1-5; Pro 19:5, Pro 29:12; Eze 22:9; Mat 26:59-61 Ahimelech: Sa1 21:1-15 Ahitub: Sa1 14:3 1 Kings (1 Samuel) 22:10”

“The Edomite Doeg could not refrain from yielding to this appeal, and telling Saul what he had seen when staying at Nob; namely, that Ahimelech had inquired of God for David, and given him food as well as Goliath's sword. For the fact itself, see Sa1 21:1-10, where there is no reference indeed to his inquiring of God; though it certainly took place, as Ahimelech ( Sa1 22:15) does not disclaim it. Doeg is here designated נצּב, "the superintendent of Saul's servants," so that apparently he had been invested with the office of marshal of the court. 1 Kings (1 Samuel) 22:11”