And yet they reject Christ. Sounds like the ultimate abandonment to me.
Not all. There are plenty of Messianic Jews. I believe when the time of the Gentiles is fulfilled there will be many more.
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That is the fundamental disagreement. Many of the basic tenets of Christianity are incompatible with Judaism: divinity of Jesus, a 3 in 1 God, original sin, satan and hell, no reincarnation, etc. I imagine if Jesus was alive today, he would reject Christ. I believe religion is created by man in order to better understand God.
“And Abraham said, My son, God will provide himself a lamb for a burnt offering: so they went both of them together.” Genesis 22:8
There were no shortage of ‘gods’ at that time that required and received human sacrifices from their believers,
Abraham’s great work, his spiritual stronghold which he built for this world was that he knew that even if he did sacrifice his Son as requested, he knew that he would be restored to him and that they would both return together, he absolutely knew it and believed it and trusted his God, and that is what we ALL owe to Abraham,
Read the fine print: God will provide himself