Sentence:  I thought it lawful from my forme act, / And the ſame end ; ſtill watching to oppreſs / "Iſrael'''s oppreſſours : of what now I ſuffer / She was not the <WSD>prime</WSD> cauſe, but I my ſelf, / Who vanquiſht with a peal of words (O weakneſs !) / Gave up my fort of ſilence to a Woman. 
Meaning of the word marked with <WSD> tags:  First in time, order, or sequence.