'Law of the Lord' in the Bible

Now when the period of their purification ended, in accordance with the law of Moses, they took Him up to Jerusalem to present Him to the Lord, to do as it is written in the law of the Lord,

(As it is written in the law of the Lord, Every male that openeth the womb shall be called holy to the Lord;)

And to offer a sacrifice according to that which is said in the law of the Lord, A pair of turtledoves, or two young pigeons.

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

So that you may keep in mind the words of the holy prophets in the past, and the law of the Lord and Saviour which was given to you by his Apostles.