Cross reference
Jeremiah 32:11
11 And I take the purchase-book, the sealed one, according to law and custom, and the open one.
Luke 2:27
27 And he came in the Spirit to the temple, and in the parents bringing in the child Jesus, for their doing according to the custom of the law regarding him,
Acts 26:3
3 especially knowing thee to be acquainted with all things -- both customs and questions -- among Jews; wherefore, I beseech thee, patiently to hear me.
1 Corinthians 11:16
16 and if any one doth think to be contentious, we have no such custom, neither the assemblies of God.