Rom.14.13  Then let us no more pass judgment on one another, but rather decide never to put a stumbling block or hindrance in the way of a brother.
1Cor.1.23  but we preach Christ crucified, a stumbling block to Jews and folly to Gentiles,
1Cor.8.9  Only take care lest this liberty of yours somehow become a stumbling block to the weak.
Gal.5.11  But if I, brethren, still preach circumcision, why am I still persecuted? In that case the stumbling block of the cross has been removed.
Rev.2.14  But I have a few things against you: you have some there who hold the teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, that they might eat food sacrificed to idols and practice immorality.