New Living Translation
“They are teaching customs that are illegal for us Romans to practice.”

American Standard Version
and set forth customs which it is not lawful for us to receive, or to observe, being Romans.

Berean Study Bible
by promoting customs that are unlawful for us Romans to adopt or practice.”

Douay-Rheims Bible
And preach a fashion which it is not lawful for us to receive nor observe, being Romans.

English Revised Version
and set forth customs which it is not lawful for us to receive, or to observe, being Romans.

King James Bible
And teach customs, which are not lawful for us to receive, neither to observe, being Romans.

World English Bible
and set forth customs which it is not lawful for us to accept or to observe, being Romans."

Young's Literal Translation
and they proclaim customs that are not lawful for us to receive nor to do, being Romans.'

Acts 16:21 Additional Translations ...