2.
The Discourse on the Power of Faith
152.
"There are, monks, these four powers.
What are the four?
The power of faith, the power of energy, the power of mindfulness, the power of concentration -
these, monks, are the four powers."
The second.
Saddhābala Sutta [AN 4.152, PTS 2.141]
Also known as: Saddhābalasuttaṃ