Paul's final two letters when he's at his oldest and wisest it's no wonder in them he rebukes all the senseless arguing that he himself was probably caught up in many times through life.
Remind them of these things, charging them in the sight of the Lord that they don’t argue about words to no profit, to the subverting of those who hear. Give diligence to present yourself approved by God, a workman who doesn’t need to be ashamed, properly handling the Word of Truth. But shun empty chatter, for it will go further in ungodliness (Second letter of Paul to Timothy)
I desire that you insist confidently, so that those who have believed God may be careful to maintain good works. These things are good and profitable to men; but shun foolish questionings, genealogies, strife, and disputes about the law; for they are unprofitable and vain. (Letter of Paul to Titus)
Remind them to be in subjection to rulers and to authorities, to be obedient, to be ready for every good work, to speak evil of no one, not to be contentious, to be gentle, showing all humility towards all men. For we were also once foolish, disobedient, deceived, serving various lusts and pleasures, living in malice and envy, hateful, and hating one another. (Letter of Paul to Titus)
I have fought a good fight, I have finished my course, I have kept the faith. (Second letter of Paul to Timothy)
Paul couldn't keep the law or the rituals he kept the only thing anyone can keep until the end.