https://www.tate.org.uk/art/artworks/blake-elohim-creating-adam-n05055
Elohim is a Hebrew name for God. This picture illustrates the Book of Genesis: ‘And the Lord God formed man of the dust of the ground’. Adam is shown growing out of the earth, a piece of which Elohim holds in his left hand.
For Blake the God of the Old Testament was a false god. He believed the Fall of Man took place not in the Garden of Eden, but at the time of creation shown here, when man was dragged from the spiritual realm and made material.
No weirder than a snake tricking a woman into eating forbidden fruit.
Sure but a snake tricking a woman into eatting a forbidden fruit is the accepted dogma. God not being the one who created humans and being the bad guy sounds like Blake was into gnosticism to me. Which is even today still a pretty wild idea. Heretical even.