And teach customs, which are not lawful for us to receive, neither to observe, being Romans.
Acts 26:3
Especially because I know thee to be expert in all customs and questions which are among the Jews: wherefore I beseech thee to hear me patiently.
Jeremiah 10:3
For the customs of the people are vain: for one cutteth a tree out of the forest, the work of the hands of the workman, with the axe.