[Petrosius]

The Sabboth on the seventh day was holy because it marked the completion of creation. With original sin, however, creation became corrupt. When our Lord rose from the dead on Easter Sunday creation was restored, thus there was an eighth day which became the new Sabboth. This is why if you look at some ancient baptistries you will notice that they are eight sided, to commemorate the eighth day.

As for the authority of the Church in this regard, remember "What you bind on earth will be bound in heaven."

[Invincibly Ignorant]

I don't claim to be part of your church or any church. I don't believe the Church's interpretation supperceeds the Hebrew Torah. According to Psalms 119 the Torah is perfect and eternal. Furthermore, in Isaiah 66 it says, in the world to come, we will worship from Sabbath to Sabbath. I doubt he was taking into consideration the Churches' definition of Sabbath.