'Law of the Lord' in the Bible

according as it is written in the law of the Lord - Every male that is a firstborn, Holy unto the Lord, shall be called,

and to give a sacrifice, according to that which is said in the law of the Lord - A pair of turtle-doves, or two young pigeons.

And, when they had finished all things that were according to the law of the Lord, they returned into Galilee, into their own city, Nazareth.