God revealed to us that HE is --
1) ETERNAL (Jehovah-Hebrew YHWH for eternal)
2) PLURAL / Godhead of 3 (Elohim is plural form of God)
3) UNITED ( The LORD our God is one LORD: Deuteronomy 6:4)
Following this REVELATION of GOD to us HE expects a Response - And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.
Deuteronomy 6:5
This TRUTH about GOD should govern-
a) your HEART
And these words, which I command thee this day, shall be in thine heart:
Deuteronomy 6:6
b) your HOUSEHOLD
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.
Deuteronomy 6:7
c) your HABITS
And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes.
Deuteronomy 6:8