I wonder about this. Didn't Jesus say that he would give us ability to do his works? Yes he did.
But you will receive power (ability, δύναμις dunamis) [when] the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the farthest part of the earth. Acts 1:8
Technically, the ability is not of us, but it does become our ability.