3 Bible Verses about Hard Labor

Do you not know that those running in the stadium, indeed all run, and one receives the prize? So run, that you may receive it. But every one contesting is abstinent in all things, they indeed also that they may receive a corruptible crown, but we an incorruptible. I therefore so run, not as uncertainly, do I thus fight not as beating the air:read more.
but I keep my body under, and enslave it, lest having preached the gospel to others, I myself may become disapproved.

For you have not yet resisted unto blood, fighting against sin;

if perchance I may attain unto the resurrection which is out from the dead. Not that I already received it, or have already been made perfect: but I persevere, if I may receive that for which I have indeed been received by Christ Jesus. Brethren, I do not consider that I have yet received it;read more.
but there is one thing, indeed forgetting those things which are behind, and reaching forward to those which are before, I press toward the goal unto the mark of the high calling of God in Christ Jesus.