False teachers must not read the Bible, or they are so jaded that they pretend that they can be Leopard Theologians and just pick the spots they like. Those who preach a “social gospel” should know that by definition they are now accursed:
Galatians 1:8–10 But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed. For am I now seeking the approval of man, or of God? Or am I trying to please man? If I were still trying to please man, I would not be a servant of Christ.
That seems pretty clear. Preaching a gospel of one’s choosing isn’t just a little different, it is the opposite and a profoundly bad thing. People like Jim Wallis who say that “the Gospel is all about wealth redistribution” are mocking this passage.
Yes, the real Gospel will lead to all sorts of good deeds. But the good deeds aren’t the Gospel. If you tell people that they must be good to be saved, that’s the bad news, not the good news, because we will always fail. Without Christ, our good deeds are like polluted garments to God (Isaiah 64:6).
The real Gospel is Jesus dying for our sins and rising from the dead. If we focus on sharing that, then transformed lives and cultures will follow and you’ll get all sorts of authentically good deeds.
1 Corinthians 15:1–11 Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand, and by which you are being saved, if you hold fast to the word I preached to you—unless you believed in vain. For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures, and that he appeared to Cephas, then to the twelve. Then he appeared to more than five hundred brothers at one time, most of whom are still alive, though some have fallen asleep. Then he appeared to James, then to all the apostles. Last of all, as to one untimely born, he appeared also to me. For I am the least of the apostles, unworthy to be called an apostle, because I persecuted the church of God. But by the grace of God I am what I am, and his grace toward me was not in vain. On the contrary, I worked harder than any of them, though it was not I, but the grace of God that is with me. Whether then it was I or they, so we preach and so you believed.
So if you really want to improve the world, share the real Gospel.