Stumbling block

 I went to class where we discussed Matthew 18:6

“If anyone causes one of these little ones

—those who believe in me—

to stumble, it would be better for them 

to have a large millstone hung around their neck

 and to be drowned in the depths of the sea.

the stumbling block in Greek is Skandalon

this picture is of a Stumbling Block or Scandalon

now that is clear language