I am a proponent of Reformed theology because I believe this is what the Bible teaches. As I've come to understand Reformed theology I have been less than gracious with others who hold other views. However, I have been challenged the last couple of years (mainly through my Ecclesiology and the Sacraments course at RTS this past spring) to be more ecumenical. And this article by Ortlund is another encouragement towards this kind of unity.
Here is his conclusion:
...Let Jesus alone stand forth in my theology, in my emotional well-being and in my relationships with other Christians!” This settledness in Paul’s heart made him a life-giving man for other people. He was a free man, setting others free (Galatians 5:1). This is the acid test of a truly Reformed ministry – that other believers need not be Reformed in order to be respected and included in our hearts.Read the whole thing
Whatever divides us emotionally from other Bible-believing, Christ-honoring Christians is a “plus” we’re adding to the gospel. It is the Galatian impulse of self-exaltation. It can even become a club with which we bash other Christians, at least in our thoughts, to punish, to exclude and to force into line with us.
What unifies the church is the gospel. What defines the gospel is the Bible. What interprets the Bible correctly is a hermeneutic centered on Jesus Christ crucified, the all-sufficient Savior of sinners, who gives himself away on terms of radical grace to all alike. What proves that that gospel hermeneutic has captured our hearts is that we are not looking down on other believers but lifting them up, not seeing ourselves as better but grateful for their contribution to the cause, not standing aloof but embracing them freely, not wishing they would become like us but serving them in love (Galatians 5:13).
My Reformed friend, can you move among other Christian groups and really enjoy them? Do you admire them? Even if you disagree with them in some ways, do you learn from them? What is the emotional tilt of your heart – toward them or away from them? If your Reformed theology has morphed functionally into Galatian sociology, the remedy is not to abandon your Reformed theology. The remedy is to take your Reformed theology to a deeper level. Let it reduce you to Jesus only. Let it humble you. Let this gracious doctrine make you a fun person to be around. The proof that we are Reformed will be all the wonderful Christians we discover around us who are not Reformed. Amazing people. Heroic people. Blood-bought people. People with whom we are eternally one – in Christ alone.