[alnick]

Go back and look at the practice of the early Church, the practice of the believers who were alive during the time of Christ and shortly thereafter.

The question was, "Isn't Sunday attendance sort of a mandantory part of the Christian faith?"

It is not mandatory. Jesus Christ did not say, "Ye shall attend church services every Sunday in order to be saved."

It's desirable, sure, but not mandatory.

[Aquinasfan]

It is not mandatory. Jesus Christ did not say, "Ye shall attend church services every Sunday in order to be saved."

I don't mean to be contentious, just explaining my position. If the Bible tells us to "listen to the Church," and the Church mandates Sunday worship, then Sunday worship is mandatory.

You're correct that Scripture doesn't record Jesus explicitly mandating Sunday worship, but keep in mind that Saturday worship was mandated for the Jews, and that Jesus didn't come to abolish the Law, but to fulfill it. And Old Testament types prefigure their superior, New Testament counterparts.

Hebrews 10:24-25

And let us consider how we may spur one another on toward love and good deeds. Let us not give up meeting together, as some are in the habit of doing, but let us encourage one another--and all the more as you see the Day approaching.

See the surrounding context especially.