Faith. According to Hebrews 11:1, faith gives certainty regarding things hoped for and in things we cannot see. The first, hope, intimates a future result or occurence. There are times certainty can apply to the future and we base this on experience. Things unseen can apply to future events, too, and this certainty is not based on experience but what has been taught (scripture, ecclesiastical leadership, personal inspiration).
But is certainty the right concept, especially with regard to the future?
Are you certain?
I opine you’re forgetting all the times faith failed, all the times prayers were not answered, all the times certainty disappointed. Selective memory, fueled by confirmation bias, is probably the source of this forgetfulness. Spend some time recognizing this phenomenon. It’s got to be a weekly occurrence, if not a bit more common. Be honest with yourself.
At length, you’ll come to realize faith is faithless.
Or, you’ll explain it away as the will of god (kind of a god of the gaps scenario).
This is where common sense should take over and hold sway.
Unfortunately, common sense is no longer so common.