And when we see God strike down a man, kill him dead, what are our thoughts? Is God unfair?
Of course not. God is fair in His assessment and eventual judgment with us relative to the sin problem. He has every right to strike down and kill whomever He needs to. There is a price to rebellion. Conversely, He has every right to bless those who revere Him, willing to follow Him whithersoever He goes.
Blessings - curses. He is fair.
Do you want to take this a step further?
Is God fair when He uses man to do the killing for Him? Do we have accounts of this? Does God use one nation to punish another? Is it fair to put common man in that position?