"The original name for the people we now call Jews was Hebrews. The word “Hebrew” (in Hebrew, “Ivri”) is first used in the Torah to describe Abraham (Gen. 14:13). The word is apparently derived from the name Eber, one of Abraham’s ancestors. Another tradition teaches that the word comes from the word “eyver,” which means “the other side,” referring to the fact that Abraham came from the other side of the Euphrates, or referring to the fact Abraham was separated from the other nations morally and spiritually. "
It is common to call them Jews, maybe not correct, but in any case this is sort of a little quibbling point. The point is that Abraham was the father of all the people who are known as “JEWISH” today - not “HEBREWS”.
And the topic is why Ishmael was so disliked by the the writers of the Old Testament?