One person considers one day to be more important than another, while another person considers every day to be alike. Each one should be fully convinced in his own mind.
However, not everyone possesses this knowledge. But some have idols in their conscience even now and eat such food as something sacrificed to idols, and since their conscience is weak, it is defiled.
To the pure, all things are pure; but to those who are defiled and do not believe, nothing is pure. In fact, both their minds and their consciences are defiled.
And without faith it is impossible to please God, for anyone who comes to him must believe that God exists and that he rewards those who earnestly seek him.