If you are a Christian, and you accept that God can kill infants and you accept that--and still worship him, you are morally repugnant.
If you tell yourself 'God was justified' in killing babies, you are mentally deranged.
If you look at this act of murder as righteousness, then you are willing to accept and DO anything your cult leader tells you to do, and that is sick.
Christianity itself is the disease: it justifies murder in the name of God. It justifies the oppression of women, the enslavement of people of color, the stoning of gays, and the murder of babies.
What part of that are you still OK with?