'Stumbling block' in the Bible

"Now if a righteous man go from his righteousness, and do the thing that is evil: I will lay a stumbling block before him, and he shall die, because thou hast not given him warning - Yea, die shall he in his own sin, so that the virtue which he did before shall not be thought upon, but his blood will I require of thine hand.

"Thou son of man, these men bear their idols in their hearts, and go purposely upon the stumbling block of their own wickedness: how dare they then ask counsel at me?