Verses with the word endeavour in the Apocrypha (2 verses):

Additions to Esther 16:3
And endeavour to hurt not our subjects only, but not being able to bear abundance, do take in hand to practise also against those that do them good:

2 Maccabees 11:19
And if then ye will keep yourselves loyal to the state, hereafter also will I endeavour to be a means of your good.