This is the only killing in the Bible that Satan had anything to do with. And he didn't do it alone; God was a co-conspirator.
The story begins by introducing Job.
Job was a perfect man with 7 sons, 3 daughters, 7000 sheep, 3000 camels, 500 oxen, 500 she asses, and lots of slaves. He was the greatest man east of the Mediterranean.
There was a man in the land of Uz, whose name was Job; and that man was perfect and upright, and one that feared God, and eschewed evil. And there were born unto him seven sons and three daughters. His substance also was seven thousand sheep, and three thousand camels, and five hundred yoke of oxen, and five hundred she asses, and a very great household; so that this man was the greatest of all the men of the east. Job 1:1-3
Job's sons liked to party a lot, and they often invited their sisters over to party with them.
And his sons went and feasted in their houses, every one his day; and sent and called for their three sisters to eat and to drink with them. Job 1:4
Job worried that his sons (he didn't worry about about his daughters) might sin while they were partying, so Job spent all his time killing animals for God in order to sanctify his sons.
And it was so, when the days of their feasting were gone about, that Job sent and sanctified them, and rose up early in the morning, and offered burnt offerings according to the number of them all: for Job said, It may be that my sons have sinned, and cursed God in their hearts. Thus did Job continually. Job 1:5
One day the sons of God came over to to God's place. And Satan was with them.
Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them. Job 1:6
God ignored his other sons, but was especially interested in Satan. He hadn't seen him for a while and wanted to know what he'd been up to lately.
And the LORD said unto Satan, Whence comest thou? Job 1:7a
Satan said that he'd been down hiking around on earth.
Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. Job 1:7b
God asked Satan if he'd seen Job, you know, the guy that is perfect, upright, God-fearing, and whatnot.
And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? Job 1:8
Satan knew who God was talking about. He told God that Job had a good reason to be good. God made Job the biggest big shot east of Eden, protecting him from everything bad and giving him everything good.
Then Satan answered the LORD, and said, Doth Job fear God for nought? Hast not thou made an hedge about him, and about his house, and about all that he hath on every side? thou hast blessed the work of his hands, and his substance is increased in the land. Job 1:9-10
Take away the protection and mess with his stuff, and he'll curse you to your face, Big Guy.
But put forth thine hand now, and touch all that he hath, and he will curse thee to thy face. Job 1:11
So God said, "You're on, Satan. Go back down to earth and and do whatever the hell you want with his stuff. But don't do anything to him."
And the LORD said unto Satan, Behold, all that he hath is in thy power; only upon himself put not forth thine hand. Job 1:12a
So Satan left God's place and, presumably, went down to earth to visit Job.
So Satan went forth from the presence of the LORD. Job 1:12b
When Satan got down to earth, he found Job's children partying, as usual.
And there was a day when his sons and his daughters were eating and drinking wine in their eldest brother's house: Job 1:13
And then all hell broke loose.
A messenger came to tell Job that the Sabeans had taken his oxen and asses and killed all his slaves ("servants" in the KJV).
And there came a messenger unto Job, and said, The oxen were plowing, and the asses feeding beside them: And the Sabeans fell upon them, and took them away; yea, they have slain the servants with the edge of the sword; and I only am escaped alone to tell thee. Job 1:14-15
And then, while he was still talking to the first messenger, another messenger showed up, telling him that "a fire from God had fallen from heaven" and burned up Job's sheep and slaves (I guess some slaves must have survived the Sabean attack).
While he was yet speaking, there came also another, and said, The fire of God is fallen from heaven, and hath burned up the sheep, and the servants, and consumed them; and I only am escaped alone to tell thee. Job 116:
And then while the second messenger was talking, a third messenger arrived to tell Job that a wind came up and knocked down the house that his children were partying at, killing them all.
(These three messengers were, of course, the only ones who survived.)
While he was yet speaking, there came also another, and said, Thy sons and thy daughters were eating and drinking wine in their eldest brother's house: And, behold, there came a great wind from the wilderness, and smote the four corners of the house, and it fell upon the young men, and they are dead; and I only am escaped alone to tell thee. Job 1:18-19
After Job heard these three messages he ripped up his clothes, shaved his head, fell on his face, and worshiped the God who had just murdered his children.
Then Job arose, and rent his mantle, and shaved his head, and fell down upon the ground, and worshipped. Job 1:20
Oh, and he also said that he was born naked and would die naked, God gives and takes away, blessed be his name.
And said, Naked came I out of my mother's womb, and naked shall I return thither: the LORD gave, and the LORD hath taken away; blessed be the name of the LORD. Job 1:21
God burned to death his slaves and animals and murdered his children, but Job didn't blame God.
In all this Job sinned not, nor charged God foolishly. Job 1:22
But God
was to blame, even if Job didn't have the guts to say so.
We know that God and Satan killed Job's seven sons and three daughters. Job also owned a lot of slaves, which were killed in God's little bet with Satan, but the Bible doesn't say how many. I'll guess there were 50 slaves that died (some burned to death).
God's next killing: Hananiah