2 Timothy 1:13–14 (ESV)
13 Follow the pattern of the sound words that you have heard from me, in the faith and love that are in Christ Jesus. 14 By the Holy Spirit who dwells within us, guard the good deposit entrusted to you.
“How do you preserve the gospel? You give it away. The gospel is the only thing in the world you guard by giving away.” – D.A. Carson