Deut. 6

⁴Hear, O Israel: The LORD our God is one LORD:

 ⁵And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.

 ⁶And these words, which I command thee this day, shall be in thine heart:

 ⁷And 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.

 ⁸And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes.

 ⁹And thou shalt write them upon the posts of thy house, and on thy gates.

We must seek first the kingdom of God and His righteousness - that is seek to allow Christ to live in us and be our Righteousness - and then everything else will be taken care of. (Matt. 6:33)