Genesis 17:5

5No longer shall your name be called Abram,
 Abram means exalted father
but byour name shall be Abraham,
 Abraham means father of a multitude
dfor I have made you the father of a multitude of nations.

Genesis 17:15

Isaac’s Birth Promised

15And God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but Sarah
 Sarai and  Sarah mean princess
shall be her name.
Copyright information for ESV