'Diligent' in the Bible

For he accepted our urging and, being very diligent, went out to you by his own choice.

We have also sent with them our brother. We have often tested him in many circumstances and found him to be diligent—and now even more diligent because of his great confidence in you.

Be diligent to present yourself approved to God, a worker who doesn’t need to be ashamed, correctly teaching the word of truth.