Rom 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." 

You may have a strong faith, let God be the judge of that! You know sometimes faith can become a means of reliance on self- not reliance on God. This faith becomes unloving. 


1Co 13:1-2  "If I speak in the tongues of men and of angels, but have not love, I am a noisy gong or a clanging cymbal.  And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but have not love, I am nothing." 

So don't lose faith and don't act out of wanting to fit in with others. If you don't believe something is right, graciously decline and let the other person deal with their personal relationship with Jesus Christ. 

 

Rom 14:23  "But whoever has doubts is condemned if he eats, because the eating is not from faith. For whatever does not proceed from faith is sin." 

On the other hand if you feel something is acceptable, yet it would offend those around you, your first obligation is love. 
Insenstivity to the needs of others is not Kosher!

Rom 15:1  "We who are strong have an obligation to bear with the failings of the weak, and not to please ourselves." 

The purpose of your faith is to build up others and follow the Lord in learning to love as He loved you. The result is full fellowship with God and one another. If what you believe doesn't lead to mighty crescendo of everyone glorifying and thanking God you are on the wrong track in your faith. 

Rom 15:2-6  "Let each of us please his neighbor for his good, to build him up.  For Christ did not please himself, but as it is written, "The reproaches of those who reproached you fell on me." For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope. May the God of endurance and encouragement grant you to live in such harmony with one another, in accord with Christ Jesus, that together you may with one voice glorify the God and Father of our Lord Jesus Christ." 

So everyone around you should be welcomed, if your traditions are different from one another realize that your traditions were meant to point others to who God is, He is Absolute Love. Faith in Him through the grace of the Lord Jesus Christ and have fellowship together with Him in the Holy Spirit results in hope and joy. 

Rom 15:7-13  "Therefore welcome one another as Christ has welcomed you, for the glory of God. For I tell you that Christ became a servant to the circumcised to show God's truthfulness, in order to confirm the promises given to the patriarchs,  and in order that the Gentiles might glorify God for his mercy. As it is written, "Therefore I will praise you among the Gentiles, and sing to your name." And again it is said, "Rejoice, O Gentiles, with his people."  And again, "Praise the Lord, all you Gentiles, and let all the peoples extol him." And again Isaiah says, "The root of Jesse will come, even he who arises to rule the Gentiles; in him will the Gentiles hope." May the God of hope fill you with all joy and peace in believing, so that by the power of the Holy Spirit you may abound in hope."