Ishmael was the first born child of Abram. He was born before Abram became Abraham. A change of name does not make him literally, not a child of Abraham, but Isaac is called the only begotten son of Abraham. <ref>[[Heb 11:17]] By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten [son],</ref> Literally, Isaac remained the second son of Abraham. In the role of the second son, he obtained the inheritance that Ishmael literally lost. <ref>[[Ge 17:21]] But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.</ref>