The best way to know whether if bible (OT and some parts of NT) is evil or not is to imagine yourself as God

Then next you want to ask yourself these questions:
What kind of world you want to create if you were God?
Will you punish your own creations?
Will you take the immortality away from your creations and replace it with suffering (hungriness, tiredness, thirstiness, etc)?
Will you let your creations to live in ignorance (not giving them knowledge)?
Will you just give your love to one nation (like israel)?

There are so many questions in that bible (mostly in OT) you can use to question yourself.

Depends on the answers, there are two outcomes: you will realize that you are being blinded by bibles and churches or you will be happy to accept the illusion of God served to you by 'these people'

The Yahweh God that you worship has been known through many generations as Zeus, Jupiter, etc, and yes this Yahweh God has been used by 'these people' to control everyone around the planet.

That was why gnostics (like Plato etc) appeared to challenge them.