'Hard' in the Bible

For, as God's steward, a minister must be of blameless life, not over-fond of having his own way, not a man of a passionate temper nor a hard drinker, not given to blows nor greedy of gain,

For in the past we were foolish, hard in heart, turned from the true way, servants of evil desires and pleasures, living in bad feeling and envy, hated and hating one another.