Why did some people have their name changed in the Bible?

from the old testament

• A clear example of a God-initiated name change is Abram. His original name meant “exalted father.” After God promised that He would be the father of many nations (Genesis 15:5), he changed his name to Abraham, which means “father of a multitude.”
• The name of his wife, Sarai, was also changed to Sarah (Genesis 17:15). “Sarai” likely meant “my princess,” suggesting a more private or familial role. “Sarah,” by contrast, means “princess” in a broader sense, fitting God’s promise that she would become the mother of nations and kings.
• As another example, Jacob’s name was changed to “Israel” (Genesis 32:28). Jacob, whose original name reflected his deceptive personality, was renamed after wrestling with God. “Israel” means “he struggles with God” or “God prevails,” marking a decisive shift in identity. The change emphasized that his position and blessing would come from God’s power, not his own scheming.
• Not all name changes in the Old Testament were given by God. Some reflected personal or situational responses to hardship. After losing her husband and sons, Naomi asked to be called Mara, a Hebrew word meaning “bitter,” because she believed the LORD had dealt harshly with her (Ruth 1:20).
• Another example of a circumstance change was when Joseph was given the Egyptian name Zaphenath-paneah after rising to power in Egypt (Genesis 41:45). This change reflected his new political role within a foreign culture.
• Similarly, Daniel and his friends were given Babylonian names when they were taken into captivity (Daniel 1:7). These types of name changes were not unique, as it was common for captors to change a name to show their “ownership” over the individual.

from the new testament

• God gave some New Testament name changes to mark a new role or calling. A clear example is Simon, whom Jesus renamed Peter (John 1:42). Simon was a common Jewish name meaning “he has heard.” Jesus gave him the name Peter, meaning “rock,” to foreshadow how God would use him as a prominent apostolic witness to Christ, especially in the early proclamation of the gospel. After the Holy Spirit came, Peter became a leading figure among the apostles. Though it should be clarified that the New Testament consistently grounds the church in Christ and in the apostolic message about Him rather than in Peter as a permanent foundation, a mistake some in church history have made (1 Corinthians 3:11; Ephesians 2:20).
• Other name changes in the New Testament reflected cultural or practical circumstances. Saul was also called Paul. Paul is the Greek or Roman form of the Hebrew name Saul (Acts 13:9). As a Roman citizen who ministered primarily among Gentiles, using the name Paul allowed him to engage more naturally with the Greek-speaking world. That is, his name “change” wasn’t really a change but an accommodation to his Greek audience.
• The New Testament also implies that all believers will receive a new name. Speaking to a specific group of believers, Jesus said, “To the one who conquers I will give some of the hidden manna, and I will give him a white stone, with a new name written on the stone that no one knows except the one who receives it” (Revelation 2:17). While we can only guess at the purpose of this name change, it may reflect our final, holy state.

implications for today

Today, in most Western cultures, a name is just a name. In the biblical world, however, a name was closely tied to one’s circumstances or to one's relationship to God. Name changes signaled a shift in one of those.

That biblical emphasis helps explain why Scripture places such weight on a person’s character. God is not impressed by titles, but by the heart of the individual. When God changed someone’s name, He was not simply renaming them “just because,” but identifying who they truly were before Him or who He was calling them to become. In the same way, Scripture teaches that God knows people as they actually are, and one way He assigns honor is by naming them according to who they really are.

This principle is seen most clearly in how Scripture speaks about Jesus. We learn that Jesus’ name is exalted above every name because of His obedience unto death and His resurrection from the dead. Jesus received supreme honor because He perfectly fulfilled the Father’s will.

Those who belong to Christ are united to Him and share His work. Because of that, the Bible promises that believers will one day receive a new name from Him, reflecting their final, perfected state. It will testify that God’s work is complete and that those redeemed by Christ belong fully and forever to Him.