The Gentiles shall see your righteousness, and all kings your glory. You shall be called by a new name, which the mouth of the Lord will name. Isaiah 62:2 (NKJV)
The LORD gives Isaiah assurance of Israel’s salvation from her enemies. God will allow the non-Jews (the Gentiles) to see Israel’s righteous living for Him. In return for their righteousness, the nation will be given a new name, chosen by The LORD himself.
In the past, when a young woman married, she took her groom’s surname as hers. That was a new name. When a family receives grandchildren, the grand parents choose what name they wish those children call them. Another new name.
When a candidate for ordination into the ministry completes his coursework and receives his license and ordination papers, his name to those to whom he ministers becomes “Pastor (insert first name and last name.)
All these changes of names in our society recognize a change in a person’s status. When the LORD chooses to give each of His children a new heart, He recognizes his or her change of character. The interesting part of this process is that God Himself is the one who gives a person or a nation a new name.