Why do Hebrew Israelites change their names?

Surname…The culture given unto us by YHWH thru Yahshua is written within all the books of the bible. We do not practice a religion but gain to learn more about our culture which was hidden from us many years ago. It is not required for a person to change their name but is a personal and spiritual choice. We find in Isaiah 44:1-8… One shall say, I am the LORD’s; and another shall call himself by the name of Jacob; and another shall subscribe with his hand unto YHWH, and surname himself by the name of Israel.