There are many passages in the Bible that explicitly say that Yahweh, the God of the Bible, is merciful and loving. Here’s an example:
But that’s far from the whole story. The Book of Joshua describes the conquest of the lands promised to the Israelites. Chapter 12 lists 31 kingdoms that were conquered under the leadership of Joshua. But those kingdoms weren’t just conquered. Every one of the kings of those kingdoms was killed. And not only that, but every one of the cities and towns over which those kings ruled was destroyed. And not only that, but all of the men, women, and children who lived in those cities and towns were killed:
God himself actively participated in this slaughter:
Furthermore, God ordered this slaughter:
Exactly why did God plan to slaughter all of those people? The answer is provided elsewhere in Deuteronomy:
So God didn’t want the Israelites to intermarry with the people of that region. But if God were actually merciful and loving, was there no other way to prevent the Israelites from intermarrying the indigenous people of the promised lands, or was slaughter the only possible option?
An omniscient God would have known that this problem would arise, and he could have planned for it at the time when he created the sun, the moon, the planets, the stars, the galaxies, and the earth itself. An omnipotent God could have created a force field around the entire region to prevent anyone else from entering. Then, when the Israelites arrived, he could have disabled the force field to let the Israelites enter a region that would have been fertile, lush, and unpopulated.
Or alternatively an omnipotent God could have left the promised lands at the bottom of the Mediterranean sea. Then when the Israelites arrived he could have lifted up the promised lands from the sea floor and the Israelites could have entered a region that would have been pristine, new, and uninhabited.
Or a truly omnipotent God could have lifted up all of the 31 kingdoms to carry them out of the way. If God had done that the inhabitants of that region would have been immensely grateful-- and he would thereby have gotten thousands of new followers as a result. Instead the only new followers he got were Rahab of Jericho and the other members of her whorehouse.
Slaughtering people simply for their beliefs is genocide. Yahweh certainly had plenty of time and opportunity to choose another path. Why didn’t Yahweh choose any of the options listed above? There is only one possible conclusion: Yahweh, the God of the Bible, is a God of genocide, not of love and mercy.