'Strive' in the Bible

Not that I have already attained this -- that is, I have not already been perfected -- but I strive to lay hold of that for which Christ Jesus also laid hold of me.

with this goal in mind, I strive toward the prize of the upward call of God in Christ Jesus.

and I ask also thee, genuine yoke-fellow, be assisting those women who in the good news did strive along with me, with Clement also, and the others, my fellow-workers, whose names are in the book of life.