In my understanding of what is prophesied in the Bible, in Deuteronomy 28 Moses stipulated a Curse, where if they went against the Lord's Salvation (Yeshua - H3444), they'd be ultimately cut off (Zechariah 11), sent among the nations, and those who repented within this time, would then be resurrected into the Messianic Kingdom in Deuteronomy 30.
God knew they'd go opposite, and said so in Deuteronomy 31:26-29; plus that there would be some declaring they have "Peace", and they weren't put under the Curse (Deuteronomy 29:19-27), where then would come the Judgement Day Fire.
When asking why their doctrine was confused, read Ezekiel 20-22 where it explains the different Exiles, and that in Ezekiel 20:25, because they'd not listen to what was right, God gave them fall statues to follow; where they follow their made up leaders (Zechariah 11:15-17), and reject what was prophesied.
As the return of the Messiah I believe I could explain how they've muddled the language since Babylon (Isaiah 46:11-13), where 'El is not like the Elohim' (Isaiah 46:9), and that In Deuteronomy 32:7-22 it explains how they will be removed from reality if they don't heed the warnings, and correct their theological errors.
Hashem refers to the Lord of Creation (YHVH Eloh), where the God Most High (El Elyon) is above the Divine Council (Deuteronomy 32:7-9), and to worship one of the Archangels (Elohim) as God (El) is Henotheism.
In my opinion.