There are, of course, many examples. This one comes to mind.
Here are third and fourth generation Christians....late second century.....still celebrating Passover as the Apostle John had taught them. And they are celebrating it on the 14th of Nisan/Abib....according to the scriptures.[Leviticus 23:5].
Your organization, in it's zeal to eliminate anything Hebrew from your worship, changed the day of Passover and then even changed the name.....to Easter. You folks finally got the Churches of the East to go along.....but to their credit they attempted to observe God's Feast Days and Sabbaths as the last living Apostle had taught them.
You will find that the true Church of the New Testament still observes God's Festivals and Sabbaths. You will even find members of God's Church here on FReeRepublic.
Actually, we changed the name to Dominica Resurrectionis, Festa Paschalis Domini Nostri Jesu Christi. ("Lord's Day of the Resurrection, Paschal Feast of Our Lord Jesus Christ")
Please ... make a note of it.