Yes, Christianity has ONE God, which is what the first bold part refers to. Note the hate comes from others toward God.
In the bible, the hate clearly comes from YHWH to all other deities.
Also, note the iniquity comes from God not Christians. The wars you cited were fought to gain freedom from slavery and oppression. What Bible did you read?
Actually, the wars were fought to take land away from the original residents. When Moses and Joshua left Egypt and wandered around for 40 years in the desert, when they located the "promised land," it was in the hands of other people. The Israelites destroyed the Amalekites, Canaanites, Amorites, Pezzites, Midianites, the city of Jericho, the city of Ai, etc. Following these battles, the Israelites killed the men, and sent the women and children into slavery. They took their land and destroyed the worship of all other gods in those areas.
That's not gaining freedom from slavery and oppression, it's robbing, enslaving, and oppressing.
See Exodus Chapter 17,
Numbers Chapters 14, 21, and 31
Joshua Chapters 6, 7, 8, 10, 11
Hezekiah was honored for destroying the worship of other gods:
…3He did right in the sight of the LORD, according to all that his father David had done
. 4 He removed the highplaces and broke down the sacred pillars and cut down the Asherah. He also broke in pieces the bronze serpentthat Moses had made, for until those days the sons of Israel burned incense to it; and it was called Nehushtan.5He trusted in the LORD, the God of Israel; so that after him there was none like him among all the kings of Judah, nor among those who were before him.…
It's funny how you have rewritten what is a very clear history in the Bible of the Israelites attacking people who lived in their promised land, and wiping them out.