27 Only conduct yourselves in a manner worthy of the gospel of Christ, so that whether I come and see you or remain absent, I will hear of you that you are standing firm in one spirit, with one mind striving together for the faith of the gospel; 28 in no way alarmed by your opponents—which is a sign of destruction for them, but of salvation for you, and that too, from God. Philippians 1:27-30 (NASB) (Read verses 29 & 30 on the site)
Notice in the passage above that Paul’s call for believers to stand firm together in one spirit, with one mind striving for the faith of the Gospel. Notice that those who do this are to do so with no fear of anything that opponents of God’s truth try to do or say against them and the message of the Gospel, that is, the real Gospel, not the Laodicean gospel or social gospel.