My interpretation of the Bible is infallible because I’m Elect because my interpretation of the Bible is infallible because I’m Elect.
For all their stated emphasis on grace, some Reformed Christian folks demonstrate such certainty in their own understandings that they actually emphasize their own interpretative stances over anything else, including grace.
What does this have to do with anything? Take a look at a few rounds of this video debate between a Reformed guy and a Roman Catholic guy, as I did recently.
Watch how they both selectively avoid the consequences of the opposing proof texts. Notice how their selective engagements involve work-arounds that have nothing to do with the texts themselves.
The take-away from their exchange, in my opinion, is simply that systematizing the Bible into a complete set of firm answers and airtight conclusions is not possible. But some people can only have a Bible if they have an infallible interpretation of it, too.
Watching the debate also reminded me that the late great French Protestant Jacques Ellul once said “the Bible is not a recipe book or an answer book, but the opposite: it is a book of questions God asks us.”