Fall of the Watchers. The Scrolls of Mezaliel, #1

Before the flood erased it, there was a world. A world of giants, sons of fallen angels and mortal women, who ruled with power no human king could match. They ended wars. They fed the hungry. They built cities that stretched to the horizon and administered justice with absolute authority. And in doing so, they took from mankind the one thing God refused to take, the freedom to choose Him. The Fall of the Watchers enters the world described in eight verses of Scripture.
Follow Mezaliel, one of the Watchers who descended from his post and spent centuries watching what his choice unleashed. Children born magnificent who confused love with dominion, order with righteousness, and their own vision of paradise with the will of God. Drawing from the Book of Enoch and the ancient testimony it preserves, The Fall of the Watchers tells the story behind the story, the oath at Mount Hermon, the birth and corruption of the Nephilim, who became dangerous through the quiet tyranny of certainty.
They did not teach mankind to reject God. They made mankind forget why He mattered. The Fall of the Watchers is Book One of The Scrolls of Mezaliel.