Deuteronomy 11:18

Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.

And these words, which I command thee this day, shall be in thine heart: And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou liest down, and when thou risest up. And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes. And thou shalt write them upon the posts of thy house, and on thy gates.

My son, forget not my law; but let thine heart keep my commandments:

Thy word have I hid in mine heart, that I might not sin against thee.

Wherefore I will not be negligent to put you always in remembrance of these things, though ye know them, and be established in the present truth.

This second epistle, beloved, I now write unto you; in both which I stir up your pure minds by way of remembrance: That ye may be mindful of the words which were spoken before by the holy prophets, and of the commandment of us the apostles of the Lord and Saviour:

And it shall be for a sign unto thee upon thine hand, and for a memorial between thine eyes, that the Lord’s law may be in thy mouth: for with a strong hand hath the Lord brought thee out of Egypt.

My son, keep thy father’s commandment, and forsake not the law of thy mother: Bind them continually upon thine heart, and tie them about thy neck. When thou goest, it shall lead thee; when thou sleepest, it shall keep thee; and when thou awakest, it shall talk with thee. For the commandment is a lamp; and the law is light; and reproofs of instruction are the way of life:

Keep my commandments, and live; and my law as the apple of thine eye. Bind them upon thy fingers, write them upon the table of thine heart.

And he said unto them, Set your hearts unto all the words which I testify among you this day, which ye shall command your children to observe to do, all the words of this law.

And it shall be for a token upon thine hand, and for frontlets between thine eyes: for by strength of hand the Lord brought us forth out of Egypt.

Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.

But all their works they do for to be seen of men: they make broad their phylacteries, and enlarge the borders of their garments,