1 Corinthians 8:9. Be careful when exercising your freedom not to be a stumbling block to the weak (vs 9, NIV).
1 Corinthians 9:1-10, right of the apostle to be provided for in their profession i.e share in the harvest.
1 Corinthians 8:9-13
[9]Be careful, however, not to let your freedom of action make those who are weak in the faith fall into sin.
[10]Suppose a person whose conscience is weak in this matter sees you, who have so-called “knowledge”, eating in the temple of an idol; will not this encourage him to eat food offered to idols?
[11]And so this weak person, your brother for whom Christ died, will perish because of your “knowledge”!
[12]And in this way you will be sinning against Christ by sinning against your Christian brothers and sisters and wounding their weak conscience.
[13]So then, if food makes my brother or sister sin, I will never eat meat again, so as not to make my brother or sister fall into sin.
1 Corinthians 9:1-10
[1]Am I not a free man? Am I not an apostle? Haven’t I seen Jesus our Lord? And aren’t you the result of my work for the Lord?
[2]Even if others do not accept me as an apostle, surely you do! Because of your life in union with the Lord you yourselves are proof of the fact that I am an apostle.
[3]When people criticize me, this is how I defend myself:
[4]Haven’t I the right to be given food and drink for my work?
[5]Haven’t I the right to follow the example of the other apostles and the Lord’s brothers and Peter, by taking a Christian wife with me on my travels?
[6]Or are Barnabas and I the only ones who have to work for our living?
[7]What soldier ever has to pay his own expenses in the army? What farmer does not eat the grapes from his own vineyard? What shepherd does not use the milk from his own sheep?
[8]I don’t have to limit myself to these everyday examples, because the Law says the same thing.
[9]We read in the Law of Moses, “Do not muzzle an ox when you are using it to thresh corn.” Now, is God concerned about oxen?
[10]Didn’t he really mean us when he said that? Of course that was written for us. The one who ploughs and the one who reaps should do their work in the hope of getting a share of the crop.