'Hard' in the Bible

nor theives, nor avaricious people, nor any who are addicted to hard drinking, to abusive language or to greed of gain, will inherit God's Kingdom.

but I hit hard and straight at my own body and lead it off into slavery, lest possibly, after I have been a herald to others, I should myself be rejected.

I beseech you, on your part, to show deference to such men, and to every one who participates in their work and toils hard.