The mission that Christ gave to his church is clear, universal, and unchanging: make disciples of Jesus Christ from all nations until He returns.
And Jesus came up and spoke to them, saying,
“All authority has been given to Me in heaven and on earth. Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit, teaching them to observe all that I commanded you; and lo I am with you always, even to the end of the age."
Matthew 28:18 - 20