Did he have the right under the First Amendment to do this?
Yes, absolutely.
Was it the right thing to do?
No, absolutely not.
Was it the Christian thing to do?
No, the Bible tells us to respect civil authorities.
We do NOT respect them at all costs. We are to disobey in many circumstances.
Render unto Caesar what is Caesar’s, and to God what is God’s.
Worship is God’s. Not Caesar’s.
Quarantine laws have been enforceable in the US since the 1640s. Many SC cases support them.