Romans 3:3; Romans 4:20; Romans 11:20; Romans 11:23

Romans 3:3

3 For what if some did not believe? shall their unbelief make the faith of God without effect?

Romans 4:20

20 He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;

Romans 11:20

20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:

Romans 11:23

23 And they also, if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again.