Here is a good example of secular faith. Leading modwrn atheist, Richard Dawkins, says he's baffled by The Big Bang. That it is contrary to common sense and modern physics is mysterious. That human intuition cannot be used to understand such physics.
He has to trust leading Physicists and take their word on how it works. Not even "trust me, bro" but "trust me because I trust them, bro."
The whole video is just ok, but the above can be found around 7:00 for suirces.