Faith is not an easy thing to stay constant with. You are always being tested. We as humans have a time just moseying around our everyday lives not worrying about a thing. It is very hard. Even for the staunch believer. I think God knows that. And definitely Jesus knew it. I do not think the early Jews knew it. I believe the high priest (rock stars) of the day, wanted to believe that living inherently of Gods laws and being born of the descendants of Moses, that a pass was given even if they fell short of Gods laws. We are and forever will be sinners. The only way our lives have been spared is through Jesus having had died on the cross, suffering and shedding his blood. So yes our faith is always a source of the enemies mainstay on this earth. We have to trust and believe in the Lord always. He knows our every need, we may have to remind the Lord of his promises to us, he knows.
Matthew 17:20 Jesus said, you have so little faith. I tell
you the truth, if you have faith as small as a mustard seed, you can say
to this mountain, 'Move from here to there' and it will move. Nothing
will be impossible for you.”