Romans teaches obedience is essential:
1:5 By whom we have received grace and apostleship, for obedience to the faith among all nations, for his name:
2:6-10 Who will render to every man according to his deeds: To them who by patient continuance in well doing seek for glory and honour and immortality, eternal life: But unto them that are contentious, and do not obey the truth, but obey unrighteousness, indignation and wrath, Tribulation and anguish, upon every soul of man that doeth evil, of the Jew first, and also of the Gentile; But glory, honour, and peace, to every man that worketh good …
2:13 … but the doers of the law shall be justified.
6:16 Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?
6:17-18 But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you. Being then made free from sin …
10:16 But they have not all obeyed the gospel …
16:26 But now is made manifest, and by the scriptures of the prophets, according to the commandment of the everlasting God, made known to all nations for the obedience of faith:
Romans teaches water baptism is necessary to salvation:
6:3 Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death?
If it is replied that Rom 6:3 is talking about Holy Spirit baptism, then it should be pointed out the baptism of Rom 6:3 is a burial, designed to look like the burial and resurrection of Christ (which fits water baptism perfectly but in no way fits Holy Spirit baptism):
6:4-5 Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection: (by the way, 6:4-5 is the primary Baptist proof text that water baptism should be done by immersion, not by sprinkling/pouring)
When Romans teaches salvation is not by works, it is not saying salvation is unconditional. Instead it is either saying salvation is not by the works of the law of Moses (proving the law has changed – Heb 7:12) or that we do not earn our salvation by keeping law – you would have to keep God’s law perfectly your whole life to be owed that:
4:4 Now to him that worketh is the reward not reckoned of grace, but of debt.
Romans teaches salvation is not at the point of faith or by faith only:
10:9-10 confession is necessary to salvation (and can only be done honestly after faith)
10:13-14 calling on the name of the Lord is necessary to salvation and comes after believing
Romans teaches that people are led to salvation by the scriptures (divine persuasion – II Cor 5:11) not by a mysterious voice:
1:16 For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth …
10:17 So then faith cometh by hearing, and hearing by the word of God.
Romans teaches contrary to the inherited Original Sin theory:
5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
Romans teaches against Once Saved Always Saved:
14:15,23 thy brother … for whom Christ died … that doubteth is condemned (by the way, this text also disproves the Calvinistic “Limited Atonement” position that Jesus only died for the saved)