'Stumbling' in the Bible

Thy words have upholden him that was stumbling, and thou hast braced up the bending knees:

And he will be for a sanctuary; and for a stone of stumbling, and for a rock of offence to both the houses of Israel, for a gin and for a snare to the inhabitants of Jerusalem.

For I have heard the defaming of many, terror on every side: Report, and we will report it. All my familiars are watching for my stumbling: Peradventure he will be enticed, and we shall prevail against him; and we shall take our revenge on him.