Matthew 18:6-7
But whoever shall occasion the fall of one of these little ones who believe in me, it would be better for him to have a millstone hung round his neck and to be drowned in the depths of the sea.
Romans 14:15
If your brother is pained by the food you are eating, your conduct is no longer controlled by love. Take care lest, by the food you eat, you lead to ruin a man for whom Christ died.
Romans 14:21
The right course is to forego eating meat or drinking wine or doing anything that tends to your brother's fall.
1 Corinthians 8:11-13
Why, your knowledge becomes the ruin of the weak believer--your brother, for whom Christ died!
1 Peter 2:9
But you are a chosen race, a priesthood of kingly lineage, a holy nation, a people belonging specially to God, that you may make known the perfections of Him who called you out of darkness into His marvellous light.