How do you get added to Jesus Christ’s church?
"Then those who gladly received his word were baptized; and that day about three thousand souls were added to them. ... So continuing daily with one accord in the temple, and breaking bread from house to house, they ate their food with gladness and simplicity of heart, praising God and having favor with all the people. And the Lord added to the church daily those who were being saved" (Acts 2:41, 46-47).
People are added to the church by Jesus when they obey his command to be baptized.