I believe that supporting the principle of religious freedom for all is one indicator of confidence in the winsomeness and truth of one’s own religion. It shows that we trust the beauty and good news of salvation, rather than force imposed by the State or other crude tactics, to grow the church. For instance, in Christianity, Jesus never shamed or ostracized those of different religious backgrounds (occupying Romans and arguably even the Samaritan woman.) While his message primarily concentrated on the Jewish people during his time on earth, his disciples following the Great Commission then opened up the Gospel to all the nations. Acts is littered with examples of the Apostles winning nonbelievers over into the Church through persuasion. One example that springs to mind is Paul’s conversion of the Ethiopian Eunuch, which he does through persuasion and explaining the Scriptures, not through fear or intimidation. As another angle, Christians (and indeed those of other faiths) also have an interest in promoting religious freedom to discourage laws that suppress the practice of their own faith, as well as laws that penalize those who convert or proselytize.