"My wrath shall become hot, and I will kill you with the sword; your wives shall be widows, and your children fatherless." (Exodus 22:24)
God kills all of Egypt's firstborn, including animals, to punish Pharoah (EX 12:29)
God kills Korah and 250 others, with their families, because they questioned Moses' authority. (Num 16:1-40)
God smites a whole city with hemorrhoids as punishment for taking the ark. (1 Sam 5:6-9)
God kills 50,000 men of Beth-shemesh because they looked into the Ark. (1 Sam 6:19)
God kills David's child in order to punish David. (2Sam 12:15-18)
God kills 70,000 men because of David's sin of taking a census. (2 Sam 24:15, 1 Chron 21:14)
Such a loving god; kills innocent people to show his wrath.