Now a certain woman named Lydia heard us. She was a seller of purple from the city of Thyatira, who worshiped God. The Lord opened her heart to heed the things spoken by Paul.
Acts 16:14

The last few posts have been about the work of the Holy Spirit in “opening people’s hearts” as necessary for salvation. Apart from Him, even the best gospel presentation will bring no one to salvation. However…

This does not preclude the necessity of believers speaking about Christ and sharing the gospel. Consider Paul’s words in Romans 10:13-14

For "Whoever calls on the name of the LORD shall be saved." How then shall they call on Him in whom they have not believed? And how shall they believe in Him of whom they have not heard? And how shall they hear without a preacher?

All who cry out to Christ for salvation based on what He has done to save His people will be saved.
Yet no one can cry out to Him for salvation if they have never hear of Him or the gospel, so...
Christ and the gospel must be declared, and God has chosen those He has saved to tell others so that they too may be saved.

Therefore, while salvation is a work of the Holy Spirit, not of either the preacher or the lost sinner, we must speak about Christ and the gospel if any will be saved. The Holy Spirit will do His part, and He will cause the lost sinner to cry out for salvation—but how are we doing as the proclaimers of Christ?