Bible Verses About Obedience to God: Obeying the gospel

By whom we have received grace and apostleship for obedience to the faith, in all nations, for his name:

But thanks be to God, that you were the servants of sin but have obeyed from the heart unto that form of doctrine into which you have been delivered.

But all do not obey the gospel. For Isaias saith: Lord, who hath believed our report?

Faith then cometh by hearing; and hearing by the word of Christ.