Feasts: (Instituted by Moses): Aliens (Non-Jews) Were Permitted to Attend
Source: Nav
John 12:20
Now there were some Greeks among those who went up to worship at the feast.
Acts 2:1–11
When the day of Pentecost came, they were all together in one place. / Suddenly a sound like a mighty rushing wind came from heaven and filled the whole house where they were sitting. / They saw tongues like flames of fire that separated and came to rest on each of them.