What's gotten people in trouble for so many centuries, is reading the Old Testament, without reading it through the lens of Jesus. (I speak from experience. Learn from my error, please.)
I don't recommend trying to understand God from the Old Testament any longer UNTIL individuals demonstrate they've got a handle on the first three verses of Hebrews, the letter written to the people of the Old Testament, which declares,
"In these last days [God has] spoken to us by His Son, whom He has appointed heir of all things,... being the brightness of His glory and the express image of His person..."
Until you can recognize that Jesus is the "express image" of God, until I learn to interpret whatever I read from the Old Testament through the revelation of the Father that is Jesus, then I WILL misunderstand God's nature. You will too.
Personally, I no longer listen to Bible teachers who haven't figured this out. Whenever someone shouts, "God is like this!!!" and points to the Old Testament to declare something about Him that is not in the revelation of Jesus, then I smile and nod, and I delete them from my Facebook Feed, or put their books in the Goodwill bin.
I won't drink from that polluted well any more. There's no life in it.