This Bible contradiction is from the Skeptic's Annotated Bible.
God is warlike
Exodus 15:3 View context
The LORD [is] a man of war: the LORD [is] his name.
Psalm 18:34 View context
He teacheth my hands to war, so that a bow of steel is broken by mine arms.
Psalm 144:1 View context
Blessed [be] the LORD my strength, which teacheth my hands to war, [and] my fingers to fight:
God is peaceful
Romans 15:33 View context
Now the God of peace [be] with you all. Amen.
1 Corinthians 14:33 View context
For God is not [the author] of confusion, but of peace, as in all churches of the saints.
2 Corinthians 13:11 View context
Finally, brethren, farewell. Be perfect, be of good comfort, be of one mind, live in peace; and the God of love and peace shall be with you.
2 Thessalonians 3:16 View context
Now the Lord of peace himself give you peace always by all means. The Lord [be] with you all.
Hebrews 13:20 View context
Now the God of peace, that brought again from the dead our Lord Jesus, that great shepherd of the sheep, through the blood of the everlasting covenant,