When Jesus said He would build the church He was talking about building us to be the church, a people, not a building. A community of believers who walk by the Spirit with power, bearing fruit, and following wherever He leads us.
Does that describe you?
Are you walking by the Spirit with power, bearing fruit and following His path?
What is God calling you to do?
Is He calling you to believe in Him, trust Him, surrender to Him, to repent?
Turn from whatever you have been doing and turn to or back to Him who is calling you to walk by the Spirit.