Do Christians have the right to bring religious practices into worship under the age of grace?

Les explains that for believers now in the age of grace, there is no right whatsoever to bring so-called religious practices into the system of worship. He says there is no room in true Christianity for the robes, miters, and similar trappings the high priests used, nor for feast days and holy days. He notes that he does not make a big deal over the commotion of Christmas and Easter; he simply tells people it is not biblical. Nothing in the Book gives the right to celebrate certain high days of the year, to celebrate the birth of Christ, or to make Easter a special holy day. He says that comes out of paganism and Old Testament Judaism. Although Judaism was the system God gave Israel, so far as you and I are concerned, we are not to incorporate any of the so-called services of Judaism into the church age. He points to Colossians chapter 2, verse 14.