I kill ... I wound ... I will make my arrows drunk with blood, and my sword shall devour flesh. -- Deuteronomy 32:39-42
How many people did God kill in the Bible?
It's impossible to say for sure, but plenty. How many did God drown in the flood or burn to death in Sodom and Gomorrah? How many first-born Egyptians did he kill? There's just no way to count them all. (But see here for a rough estimate.)
But sometimes the Bible tells us exactly how many were killed by God. Here's a list of those that I can find. (If you find any that I've missed, let me know and I'll add them to the list.)
So far I come up with a total of 2,316,428 (not including, at least in some cases, women and children).