Doctrinal certainties to “know” are the blunt instruments in the toolbox of faith. And while they serve a purpose, they aren’t very good at addressing the specific, intimate evils and pains we all grapple with in life.
The gospel gives us the tools to enter into the sacred “I thou” space and meet God; the church provides the laboratory.
Some have characterized this as “the loophole in the gospel”. If we require a tremendous amount of mercy to be saved, then Christ is teaching us here that we'll need to be merciful in equal measure.