Philippians 2:4 Let each of you look out not only for his own interests, but also for the interests of others.

[Mr. M]

1 Corinthians 8:9-13 But beware lest somehow this liberty of yours become a stumbling block to those who are weak. For if anyone sees you who have knowledge eating in an idol’s temple, will not the conscience of him who is weak be emboldened to eat those things offered to idols?  And because of your knowledge shall the weak brother perish, for whom Christ died? But when you thus sin against the brethren, and wound their weak conscience, you sin against Christ. Therefore, if food makes my brother stumble, I will never again eat meat, lest I make my brother stumble.

On the other hand, we do not have to accommodate a weak brother to the point of disrupting fellowship.

Romans 14:1 Receive one who is weak in the faith, but not to disputes over doubtful things. 

But then he goes on to say

7 For none of us lives to himself, and no one dies to himself.

13 Therefore let us not judge one another anymore, but rather resolve this, not to put a stumbling block or a cause to fall in our brother’s way.

15 Yet if your brother is grieved because of your food, you are no longer walking in love. Do not destroy with your food the one for whom Christ died.

21 It is good neither to eat meat nor drink wine nor do anything by which your brother stumbles or is offended or is made weak. 

Romans 15:

1 We then who are strong ought to bear with the scruples of the weak, and not to please ourselves. 

2 Let each of us please his neighbor for his good, leading to edification.

The significance of displaying an image, whether by pendant, medal, or tattoo is in the eye of the beholder.

1 Corinthians 10:23 All things are lawful for me, but not all things are helpful; all things are lawful for me, but not all things edify. 24 Let no one seek his own, but each one the other’s well-being.

We cannot be comfortable with possibly offending a weaker Christian, following what Paul teaches repeatedly,

we should refrain, or be careful when you allow yourself to take on any outward display.

32 Give no offense, either to the Jews or to the Greeks or to the church of God, 

33 just as I also please all men in all things, not seeking my own profit, but the profit of many, that they may be saved.

If this is true for something as mundane as what we eat, how much more with regard to idols,

which is precisely what an crafted image is according to scripture.

Psalm 135:15 The idols of the nations are silver and gold,
The work of men’s hands.

 

[Mr. M]

The easiest way to see this is to consider a young man or woman you have just lead to Salvation and welcomed into the Fellowship of Christ. Would you say, "congratulations, let's go have drinks to celebrate"?. Not at all legalistic, just the need for mature believers to set a good example, but more importantly, to not lay a stumbling block before someone. Or if they asked, "can I still go out to the clubs with my friends?" You would not say "oh no! that is absolutely forbidden!" Of course not, but you would offer the advice of seeking out new relationships in Christ. We all know that the possibility exists that we may have left all to follow Christ, even family. Would you fail to offer the sound counsel of the Gospel, not to mention the teachings of Christ to His disciples, because you think someone is accusing you of being legalistic? There is an excessive sensitivity to that, in spite of the fact that Paul even says that the Law is a schoolmaster to lead us to Christ. The exercise of liberty in Christ is in direct measure to the maturity of the believer, hence he makes it clear:

Galatians 5:

1  Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage.

13 For you, brethren, have been called to liberty; only do not use liberty as an opportunity for the flesh, but through love serve one another.

From this, and all the other scriptures I have presented, I am not sure how this can have any more clarity. All opinions aside...