In Genesis 17 when Abraham was 90 years of age God appears to him and tells him in verse 5 that his name is no longer Abram - hitherto Abraham had been called Abram - God appears to him and tells him that his name is no longer Abram but Abraham. The next time Abraham is mentioned is four verses later - and by his new name, a name that continues thereafter throughout the rest of the Scriptures.
Coming to his Abraham's grandson Jacob, the man who would become the direct ancestor of the twelve tribes of Israel had an encounter with an angel of God on his way back from having been with Laban, his uncle and the father of his two wives. There and then one event led to another and the angel told Jacob that he would no longer be called by his now previous name but by the name "Israel".
Again Jacob is met this time by God in Genesis 35:9 when he is on his way out of out of Padanaram, and is blessed by Him. In the next verse God changes his name to Israel. The next time Jacob is mentioned is four verses later, as with Abraham. But unlike with Abraham, Jacob is mentioned by his previous name, a name that continues in far greater frequency of use than his new new.
What do you think that is - to the extent that he is alternatively called Jacob and Israel in a single verse?