Sentence:  Here by this petition whan we say, Leade vs not into temptation, we learne to know our own <WSD>impossibilitie</WSD> and infirmitie, namely that we bee not able of our owne selues to with∣stand this great and mightye enemye the deuill. 
Meaning of the word marked with <WSD> tags:  The state of being unable to do something.