We have problems with abortion, the sanctity of marriage and the free, unrestricted practice of our faith BECAUSE we have shoved aside the Great Commission.
Jesus did not command us to protect marriage as an institution in society. He did not command us to picket abortion clinics. He did not command us to exercise our freedom of speech. Those are all important things, but not THE most important thing.
The most important thing for Christians to do is to make disciples out of all nations, baptize them, and teach them to be obedient to Christ's commands. If we do this, all else falls into place.
I used to be in agreement with you—but I also think Christians, motivated by love of neighbor, have a responsibility to the common good too. I think back to Evangelist William Wilberforce who was the lead abolitionist that brought about the end of the British slave trade.
Not only was he doctrinally and theologically sound, and totally Christ-centered in all he did—but God had called him to a mission with temporal, secular implications as well. I am sure this required Wilberforce to work across party lines, work with unbelievers, etc...for the sake of justice. Just as many believing Christians worked with Deists and unbelievers in crafting the US Constitution.
That being said, you’re right “the common good” is not our ultimate goal—our primary allegiance is to the kingdom of Jesus Christ.
Unfortunately, that is the one issue most susceptible to abuse.
I will walk a mile out of my way to avoid that.
The tendency to eventually join the muslim mindset is just too real.
One such so-called religion on this earth is one two many.
Of course, that does not prevent pursuing the identical goal simply by example.