"We believe the Bible to be inspired and infallible, and as such, the supreme authority in faith and life."
If you want to understand the behavior of many Evangelicals and the politicians and celebrity ministers they support, I believe a lot of it stems from maintaining an "error-less" view of the Bible.
The Bible is littered with scriptures such as -
"If a priest’s daughter defiles herself by becoming a prostitute, she disgraces her father; she must be burned in the fire."
You can find scriptures about how to beat your slaves, when killing children is acceptable, legal rape, etc. The Bible condones and encourages some pretty horrific behavior.
Of course, bring up any of those scriptures and the dutiful Evangelical will do an apologetic box-step. Defenses will fly like a fighter jet throwing counter-measures. Once the Evangelical has been convinced of "infallibility", there is little that could ever persuade them otherwise... even when evil behavior is right there on the page.
As a former Evangelical, I understand this.
The practice of declaring something innocent that is clearly not can be transferred to other circumstances.