This name was first introduced in the Bible in Gen. 32:29:
“And he said, Your name shall be called no more Jacob, but Israel; for as a prince you have power with God and with men, and have prevailed.”
In fact, the translation: “you have power” is somewhat weak. The Hebrew word that is used in this verse is “sa-ri-ta.” It is a past-tense verb that comes from the root word “Sar.” Sar is, indeed, a prince, but in this verse it is a verb which means “to fight” or even better: “to wrestle.” In a way, taking the action of a prince or hero. Listen carefully to the two words: “Israel” and “wrestle.” Can you hear the similarity?
Now you know from where the word “wrestle” came, and you also know the full meaning of the name “Israel.”