Luke 3:5-6
Every valley shall be filled, and every mountain and hill shall be brought low; and the crooked shall become straight, and the rough ways smooth;
Romans 14:13
Let us not, therefore, judge one another any more; but judge ye this rather, not to put a stumbling-block, or an occasion of falling, in a brother's way.
1 Corinthians 1:23
but we preach Christ crucified; to the Jews, a stumbling-block, and to the gentiles foolishness;
1 Corinthians 8:9
But take heed, lest this liberty of yours become a stumbling-block to the weak.
1 Corinthians 8:13
Wherefore, if food causes my brother to stumble, I will in no wise eat flesh forevermore; that I cause not my brother to stumble.
1 Corinthians 10:32-33
Give no occasion of stumbling, either to Jews or Greeks, or to the assembly of God:
2 Corinthians 6:3
giving no occasion of stumbling in anything, that our ministry be not blamed;
Hebrews 12:13
and make straight paths for your feet, that the lame be not turned out of the way, but rather be healed.