Romans 16:17 Now I beg you, brothers, look out for those who are causing the divisions and occasions of stumbling, contrary to the doctrine which you learned, and turn away from them. (See NIV)
Isaiah 57:14 And I will say, Make it high, make it high, get ready the way, take the stones out of the way of my people. (See NIV)
Jeremiah 6:21 For this reason the Lord has said, See, I will put stones in the way of this people: and the fathers and the sons together will go falling over them; the neighbour and his friend will come to destruction. (See NIV)