The Role of Feasts in Salvation

I think there's almost this sort of resurgence of kind of like the Hebrew roots elements where I think when it comes to what role do the feasts have and what was the role of Passover. But specifically with the World Missions Society of Church of God is that they're saying not only is it am I better than you, or I have a special knowledge which makes me a higher Christian, but you are not saved because you're not observing these.