1 Corinthians 8:6-7

for us there is only one God—our Father. All things came from him, and we live for him. And there is only one Lord—Jesus Christ. All things were made through him, and we also were made through him. But not all people know this. Some people are still so used to idols that when they eat meat, they still think of it as being sacrificed to an idol. Because their conscience is weak, when they eat it, they feel guilty.