Matthew 15:2-5
"Why do your disciples break the rules handed down by our ancestors? For they eat their bread without first washing their hands."
Luke 11:45-46
At this, one of the experts in the Law said to him, "Master, when you say that, you affront us too."
Romans 2:19-24
and you are sure that you can guide the blind, enlighten people who are in the dark,
Romans 14:21
The right thing to do is to eat no meat at all and to drink no wine or do anything else if it hurts your brother's conscience.
Hebrews 3:12
See to it, my brothers, that no one of you has a wicked, unbelieving heart, that turns away from the ever-living God,