Whose job is it to tell others about Salvation?

Salvation comes by hearing something and then believing that something. God's word tells us that "we" the Body of Christ are responsible for telling others about salvation today in this Dispensation of the Grace of God. The something we need to believe is that "Christ died on the cross for our sins, was buried, and rose again". It's not about us, but entirely about what Christ did for us. We are just the ambassadors for God today.