Morality

Commands and stories that are hard to square with the God described elsewhere in the same book.

Did Jephthah sacrifice his daughter? Judges 11 Judges 11:29-40; Deuteronomy 12:31
Jephthah vows to offer whatever first comes out of his house, and it is his daughter. The text appears to say he kept the vow, and does not condemn it.
The command to destroy the Canaanites. Deuteronomy 20 and Joshua 11 Deuteronomy 20:10-18; Deuteronomy 7:1-5; Joshua 11:19-20
Israel is told to leave nothing alive that breathes in the cities of Canaan, and the text says God hardened the Canaanites' hearts so they would fight.
What do the law codes say about slavery? Exodus 21 and Leviticus 25 Exodus 21:2-11; Exodus 21:20-21; Leviticus 25:44-46; Deuteronomy 23:15-16; Ephesians 6:5; Philemon 1:15-16
The Old Testament regulates slavery and never abolishes it. The New Testament tells slaves to obey and one letter hints at a different attitude. Christians used these texts on both sides of the abolition debate.
Why did God command the destruction of the Amalekites? 1 Samuel 15 1 Samuel 15:1-9; Deuteronomy 25:17-19; Exodus 17:8-16
Saul is told to kill every Amalekite, including infants, and is rejected as king for sparing the best of the livestock and the king.
Why did bears kill the boys who mocked Elisha? 2 Kings 2:23-24 2 Kings 2:23-25
A group of young people mock the prophet Elisha, he curses them in God's name, and two bears kill forty-two of them.
Why would God ask Abraham to sacrifice Isaac? Genesis 22 Genesis 22:1-19; Jeremiah 7:31; James 1:13
God commands Abraham to offer his son as a burnt offering, then stops him. Readers have asked what the story says about God, about obedience and about the ethics of the command.