It has long been a custom among Eastern people to change their names on the occurrence of some great event in life. It was in accordance with the divine command at the time of the renewal of the covenant that the name of Abram was changed to Abraham (Gen. 17:55Neither shall thy name any more be called Abram, but thy name shall be Abraham; for a father of many nations have I made thee. (Genesis 17:5); Neh. 9:77Thou art the Lord the God, who didst choose Abram, and broughtest him forth out of Ur of the Chaldees, and gavest him the name of Abraham; (Nehemiah 9:7)) and that of Sarai to Sarah (Gen. 17:1515And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. (Genesis 17:15)). Jacob’s name was changed to Israel, in commemoration of his prevailing prayer (Gen. 32:28; 35:1028And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed. (Genesis 32:28)
10And God said unto him, Thy name is Jacob: thy name shall not be called any more Jacob, but Israel shall be thy name: and he called his name Israel. (Genesis 35:10)). The king of Egypt changed the name of Joseph to Zaphnath-paaneah, because of his ability to reveal secrets (Gen. 41:4545And Pharaoh called Joseph's name Zaphnath-paaneah; and he gave him to wife Asenath the daughter of Poti-pherah priest of On. And Joseph went out over all the land of Egypt. (Genesis 41:45)). Another king of Egypt subsequently changed the name of Eliakim the son of Josiah to Jehoiakim, when he made him king of Judah, as narrated in the text, and also in 2 Kings 23:3434And Pharaoh-nechoh made Eliakim the son of Josiah king in the room of Josiah his father, and turned his name to Jehoiakim, and took Jehoahaz away: and he came to Egypt, and died there. (2 Kings 23:34). So when the king of Babylon made Matianiah king he changed his name to Zedekiah. 2 Kings 24:1717And the king of Babylon made Mattaniah his father's brother king in his stead, and changed his name to Zedekiah. (2 Kings 24:17). In like mariner the name of Hadassah was changed to Esther (Esther 2:77And he brought up Hadassah, that is, Esther, his uncle's daughter: for she had neither father nor mother, and the maid was fair and beautiful; whom Mordecai, when her father and mother were dead, took for his own daughter. (Esther 2:7)). So, also, when Nebuchadnezzar wished to have a few of the young Jewish prisoners taught in the Chaldean language and customs, he changed their names from Daniel, Hananiah, Mishael, and Azariah, to Belteshazzar, Shadrach, Meshach, and Abed-nego (Dan. 1:6-76Now among these were of the children of Judah, Daniel, Hananiah, Mishael, and Azariah: 7Unto whom the prince of the eunuchs gave names: for he gave unto Daniel the name of Belteshazzar; and to Hananiah, of Shadrach; and to Mishael, of Meshach; and to Azariah, of Abed-nego. (Daniel 1:6‑7)).
The custom is further illustrated by Sir John Chardin in his Travels in Persia. He states that King Sefi, the first years of whose reign were unhappy on account of wars and famine in many of the Persian provinces, was persuaded by his counselors to change his name as a means of changing the tide of fortune, since there must be about the name of Sefi some hidden fatal power of evil. He was, therefore, crowned anew in the year 1666 under the name of Solyman III. All seals, coins, and other public symbols that had on them the name of Sefi, were broken, the same as if the king had been dead, and his successor had taken his place upon the throne.