3 - The parable of the mustard seed
I definitely agree and think through out the bible we see this in the people God chooses to do his work.
I think there have been very big growths in the kingdom from what was originally a small act. I have been involved in 24/7 prayer now for a few years and it is a huge worldwide thing with both small scale and large scale prayer rooms happening. But that started from quite small beginnings.
I also think that while anyone who brings someone to God and that person commits there life to God should be acknowledged sometimes it's a very small act or word that plants the seed of faith in someone and we may never see or know when that person gives their lives to God.
A seed grows because it has sun and water and earth but without the seed nothing will grow.
Not sure I am making sense.