In your own words, summarize the main points being made in the following passage.

Knowledge. If priests be good it is so surely;
But when Jesus hanged on the cross with great smart
There he gave, out of his blessed heart,
The same sacrament in great torment:
He sold them not to us, that Lord Omnipotent.
Therefore Saint Peter the apostle doth say
That Jesu's curse hath all they
Which God their Saviour do buy or sell,
Or they for any money do take or tell.
Sinful priests giveth the sinners example bad;
Their children sitteth by other men's fires, I have heard;
And some haunteth women's company,
With unclean life, as lusts of lechery
These be with sin made blind.