Matthew 15:2-5
"Why do your disciples transgress the tradition of the elders? They do not wash their hands when they take their food."
Luke 11:45-46
One of the jurists said to him, "Teacher, when you say this you are insulting us as well."
Romans 2:19-24
and are persuaded that you are a guide to the blind, a light to darkened souls,
Romans 14:21
the right course is to abstain from flesh or wine or indeed anything that your brother feels to be a stumbling-block.
Hebrews 3:12
Brothers, take care in case there is a wicked, unbelieving heart in any of you, moving you to apostatize from the living God.