Titus 3:9 But avoid foolish controversies, genealogies, dissensions, and quarrels about the law, for they are unprofitable and worthless.
Here is good advice that is often overlooked. We want to be right about important matters, but what makes any matter foolish? One side will insist that a matter is important and the other will disagree.
Some matters have not been resolved over the last 2,000 years. It is unwise of us to think that we can resolve those issues alone. Some of us have been in the faith for decades and have experience in which issues are arguable and which ones are a matter of faith.
Galatians 3:11 Now it is evident that no one is justified before God by the law, for “The righteous shall live by faith.”
When we insist that others believe what we believe we are making a law unto ourselves and those laws will not justify us any more than the ones written in Torah.
Psalm 61:6-8 English Standard Version
6 Prolong the life of the king; may his years endure to all generations! 7 May he be enthroned forever before God; appoint steadfast love and faithfulness to watch over him! 8 So will I ever sing praises to your name, as I perform my vows day after day.
Jesus is the King who sits on the throne. The only vows we are sworn to keep are the ones we make to Him.
Romans 14:22 The faith that you have, keep between yourself and God. Blessed is the one who has no reason to pass judgment on himself for what he approves.
My understanding of this passage is personal, as is faith. I will not insist that others keep a vow I have made to my Lord and Savior Jesus Christ.
Giving reason for this belief by faith has a point that others might disagree with. I approve of your right to believe by faith an opinion other than my own. That does not say I approve of sin but some will see it that way. I know that because I have heard that very argument.
I defer to Titus 3:9 and choose not to attack another on any issue that is a personal vow to my King. We answer to Him, not each other.
Deuteronomy 23:21 “If you make a vow to the Lord your God, you shall not delay fulfilling it, for the Lord your God will surely require it of you, and you will be guilty of sin.”
Maybe this is why Jesus encourages us not to make a vow at all. Matthew 5:34