How does God's choice of believers affect evangelism?

The doctrine of election profoundly affects the approach to evangelism. Understanding that God has chosen a people for Himself instills confidence in believers as they share the Gospel. In Acts 18:9-10, God assures Paul that there are many people in Corinth whom He has ordained to save, prompting Paul to continue preaching boldly. This assurance is personal for every believer; knowing that God has His elect assures them that their efforts in evangelism are not in vain. The means God has chosen to call His people is through the proclamation of the Gospel, thereby encouraging believers to faithfully preach, knowing that God will draw His elect to Himself.