While Paul was against "Works Alone Salvationism" that left out faith and God's grace, Paul was not against the requirement in having an obedience to God; For Paul said,
"They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate." (Titus 1:16).
"If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness; He is proud, knowing nothing, "
(1 Timothy 6:3-4). (Note: James says, God resists the proud and gives grace to the humble (James 4:6)).
"What shall we say then? Shall we continue in sin, that grace may abound? God forbid. How shall we, that are dead to sin, live any longer therein? (Romans 6:1-2).
"If any man love not the Lord Jesus Christ, let him be Anathema Maranatha." (1 Corinthians 16:22).
(Note: "Anathema" means "accursed"; And Jesus says: "If ye love me, keep my commandments." (John 14:15).)
"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, to the Jew first, and also to the Gentile: For there is no respect of persons with God." (Romans 2:8-11).
“For if God spared not the natural branches, take heed lest he also spare not thee. Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in his goodness: otherwise thou also shalt be cut off.” (Romans 11:21-22).
“Work out your own salvation with fear and trembling.” (Philippians 2:12).
“...And having become servants of God, ye have your fruit unto holiness and the end, everlasting life.” (Romans 6:22) (KJ21).
25 "...even as Christ also loved the church, and gave himself for it;
26 That he might sanctify and cleanse it with the washing of water by the word,
27 That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish." (Ephesians 5:25-27).
"Who gave himself for us, that he might redeem us from all iniquity, and purify unto himself a peculiar people, zealous of good works." (Titus 2:14).
"Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates?" (2 Corinthians 13:5).
(Note: How can we have an assurance in knowing whether or not Christ lives within us? The apostle John says in 1 John 2:3-4, "And hereby we do know that we know him, if we keep his commandments. He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.").
"If any man think himself to be a prophet, or spiritual, let him acknowledge that the things that I write unto you are the commandments of the Lord." (1 Corinthians 14:37).