Acts.16.4  As they went on their way through the cities, they delivered to them for observance the decisions which had been reached by the apostles and elders who were at Jerusalem.
Acts.21.24  take these men and purify yourself along with them and pay their expenses, so that they may shave their heads. Thus all will know that there is nothing in what they have been told about you but that you yourself live in observance of the law.

Hyper-concordance v1.1, by Sean Boisen. Scripture verses taken from the Revised Standard Version, copyright 1952, 1971.