“If I only use the right words …”
“If I try the right method …”
“If I knew more answers …”
“… then so-and-so would be saved.”
These kinds of ideas put the power of persuasion on you instead of in the gospel and the work of the Holy Spirit.
I am not ashamed of the gospel of Christ, for it is the power of God to salvation for everyone who believes … for in it the righteousness of God is revealed from faith to faith; as it is written, “The just shall live by faith” (Romans 1:16-17).