Gilad Atzmon is misleading you.

First by pulling scripture out of context, and ascribing unrighteousness to a righteous God. By the very definition, God cannot be called God if there is any unrighteousness in Him.

Second, by having you believe that "Jews" are the same as Israel of the Old Testament. "Jews" are not descendants of Jacob (Israel), but are descendants of Esau (Edom/Esau who traded his relationship with God for a bowl of stew).

Gilad Atzmon is himself an Edomite "Jew" and a typical, deceiving one to boot.

I'm seeing a false teaching that is spreading willy-nilly across social media...that the God of the Old Testament is not the same God of the New Testament.

Not only in Atzmon's video. Here's an example from the comments under his video on YouTube:

@two-strokesmoke7289 5 hours ago

The "god" of the old testament is not the MOST HIGH TRUE GOD, however; he (god in OT is a warmonger and he is a liar and a murderer)

@two-strokesmoke is a liar and an idiot. And he is not alone.

For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears; And they shall turn away their ears from the truth, and shall be turned unto fables. 2 Timothy 4:3-4

Here is the foundational Christian teaching: the God of the Bible is the same God, of both the Old and New Testaments. The same yesterday, today, forever.

Second, by having you believe that "Jews" are the same as Israel of the Old Testament. "Jews" are not descendants of Jacob (Israel), but are descendants of Esau

That is a false statement. If you have proof please post it and make me eat my words.