Olympas a Roman Christian whom Paul salutes (Rom. 16:15).

Omar eloquent, the son of Eliphaz, who was Esau's eldest son (Gen. 36:11-15).

Omega (Rev. 1:8), the last letter in the Greek alphabet. (See A.)

Omer a handful, one-tenth of an ephah=half a gallon dry measure (Ex. 16:22, 32, 33, 36)="tenth deal."

Omri servant of Jehovah. When Elah was murdered by Zimri at Tirzah (1 Kings 16:15-27), Omri, his captain, was made king (B.C. 931). For four years there was continued opposition to his reign, Tibni, another claimant to the throne, leading the opposing party; but at the close of that period all his rivals were defeated, and he became king of Israel, "Tibni died and Omri reigned" (B.C. 927). By his vigour and power he gained great eminence and consolidated the kingdom. He fixed his dynasty on the throne so firmly that it continued during four succeeding reigns. Tirza was for six years the seat of his government. He then removed the capital to Samaria (q.v.), where he died, and was succeeded by his son Ahab. "He wrought evil in the eyes of the Lord, and did worse than all that were before him."

Beth-omri, "the house" or "city of Omri," is the name usually found on Assyrian inscriptions for Samaria. In the stele of Mesha (the "Moabite stone"), which was erected in Moab about twenty or thirty years after Omri's death, it is recorded that Omri oppressed Moab till Mesha delivered the land: "Omri, king of Israel, oppressed Moab many days, for Chemosh was angry with his land. His son succeeded him, and he also said, I will oppress Moab" (comp. 2 Kings 1:1; 3:4, 5). The "Moabite stone" also records that "Omri took the land of Medeba, and occupied it in his day and in the days of his son forty years."

On light; the sun, (Gen. 41:45, 50), the great seat of sun-worship, called also Bethshemesh (Jer. 43:13) and Aven (Ezek. 30:17), stood on the east bank of the Nile, a few miles north of Memphis, and near Cairo, in the north-east. The Vulgate and the LXX. Versions have "Heliopolis" ("city of the sun") instead of On in Genesis and of Aven in Ezekiel. The "city of destruction" Isaiah speaks of (19:18, marg. "of Heres;" Heb. 'Ir-ha-heres, which some MSS. read Ir-ha-heres, i.e., "city of the sun") may be the name given to On, the prophecy being that the time will come when that city which was known as the "city of the sun-god" shall become the "city of destruction" of the sun-god, i.e., when idolatry shall cease, and the worship of the true God be established.

In ancient times this city was full of obelisks dedicated to the sun. Of these only one now remains standing. "Cleopatra's Needle" was one of those which stood in this city in front of the Temple of Tum, i.e., "the sun." It is now erected on the Thames Embankment, London.

"It was at On that Joseph wooed and won the dark-skinned Asenath, the daughter of the high priest of its great temple." This was a noted university town, and here Moses gained his acquaintance with "all the wisdom of the Egyptians."

Onan strong, the second son of Judah (Gen. 38:4-10; comp. Deut. 25:5; Matt. 22:24). He died before the going down of Jacob and his family into Egypt.

Onesimus useful, a slave who, after robbing his master Philemon (q.v.) at Colosse, fled to Rome, where he was converted by the apostle Paul, who sent him back to his master with the epistle which bears his name. In it he beseeches Philemon to receive his slave as a "faithful and beloved brother." Paul offers to pay to Philemon anything his slave had taken, and to bear the wrong he had done him. He was accompanied on his return by Tychicus, the bearer of the Epistle to the Colossians (Philemon 1:16, 18).

The story of this fugitive Colossian slave is a remarkable evidence of the freedom of access to the prisoner which was granted to all, and "a beautiful illustration both of the character of St. Paul and the transfiguring power and righteous principles of the gospel."

Onesiphorus bringing profit, an Ephesian Christian who showed great kindness to Paul at Rome. He served him in many things, and had oft refreshed him. Paul expresses a warm interest in him and his household (2 Tim. 1:16-18; 4:19).

Onion The Israelites in the wilderness longed for the "onions and garlick of Egypt" (Num. 11:5). This was the betsel of the Hebrews, the Allium cepe of botanists, of which it is said that there are some thirty or forty species now growing in Palestine. The onion is "the 'undivided' leek, unio_, _unus, one."