Theology does matter. I am not saying that the only people you can ever smile at and shake their hand and say hallo to, are those that cross their theological t's and dot their theological i's exactly like you. But the fellowship that we share at the deepest level is based on the things that we really believe. And if you have people that do not really believe them, then what do you have? Nothing, nothing!1
Brian Borgman
3 But Zerubbabel, Jeshua, and the rest of the heads of fathers’ houses in Israel said to them, “You have nothing to do with us in building a house to our God; but we alone will build to the LORD, the God of Israel, as King Cyrus the king of Persia has commanded us.”