“And he built there an altar, and called the place Elbethel: because there God appeared unto him, when he fled from the face of his brother.”
King James Version (KJV)
35:7 He built an altar - And no doubt offered sacrifice upon it, perhaps the tenth of his cattle, according to his vow, I will give the tenth unto thee. And he called the place, That is, the altar, El - beth - el, the God of Beth - el. As when he made a thankful acknowledgement of the honour God had done him in calling him Israel, he worshipped God by the name of El - elohe - israel, so now he was making a grateful recognition of God's former favour at Beth - el, he worships God by the name of El - beth - el, the God of Beth - el, because there God appeared to him.