Missionary work by Christians is the practice of sharing the message of Jesus Christ with people who have not yet heard it or have not yet accepted it. Christians believe that the Gospel message is good news for all people, and that it is their responsibility to share it with others.

Christian missionary work can take many different forms, depending on the context and the goals of the mission. Some missionaries may focus on evangelism, sharing the message of salvation through Jesus Christ with people who have not yet accepted it. This may involve preaching in public places, distributing literature, teaching classes, or engaging in personal conversations with individuals.

Others may focus on providing humanitarian aid or social services, such as healthcare, education, or disaster relief, as a means of demonstrating the love and compassion of Christ.