Summary: A message about the importance of teaching our family the ways of the Lord.
Title: Lest You Forget
Text: Deuteronomy 6:4-9
Deut 6:4-9 "Hear, O Israel: The Lord our God, the Lord is one!  (5) You shall love the Lord your God with all your heart, with all your soul, and with all your strength. (6) "And these words which I command you today shall be in your heart. (7) You shall teach them diligently to your children, and shall talk of them when you sit in your house, when you walk by the way, when you lie down, and when you rise up. (8) You shall bind them as a sign on your hand, and they shall be as frontlets between your eyes. (9) You shall write them on the doorposts of your house and on your gates.
The Shema – Sha - Ma
The Shema is the centerpiece of the daily morning and evening prayer services and is considered by some the most essential prayer in all of Judaism. An affirmation of God’s singularity and kingship, its daily recitation is regarded by traditionally observant Jews as a biblical commandment.
Shema – Hear, Listen up . Jesus would say, “Verily, Verily”. As when a mother would call the full name of their children. Edward Akai Hardee
So God is saying this is important. God is speaking to the Jews and saying this is important.
Deut 6:4-9 "Hear, O Israel: The Lord our God, the Lord is one! 
Lord – Ywheh, Jehovah “self existent one”
Our God – personal God “Made in His image” “Created for His Purpose
Lord is one
There are not different God’s but only one God.
This is so important in a land where Polytheism was rampant. This was a belief in many Gods. It is said that in Hinduism there are over 33 million Gods.
Could you imagine trying to get instruction from all these. Who is right?
Yet we have a God who has a best interest at heart.
Act 17:23-28 for as I was passing through and considering the objects of your worship, I even found an altar with this inscription: TO THE UNKNOWN GOD. Therefore, the One whom you worship without knowing, Him I proclaim to you: (24) God, who made the world and everything in it, since He is Lord of heaven and earth, does not dwell in temples made with hands. (25) Nor is He worshiped with men's hands, as though He needed anything, since He gives to all life, breath, and all things. (26) And He has made from one blood  every nation of men to dwell on all the face of the earth, and has determined their preappointed times and the boundaries of their dwellings, (27) so that they should seek the Lord, in the hope that they might grope for Him and find Him, though He is not far from each one of us; (28) for in Him we live and move and have our being, as also some of your own poets have said, 'For we are also His offspring.'
The word one here does not take away from the Trinity. We know from the Elohim which a common OT name from God that there is a plurality yet there is one. One mind, one purpose, yet different functions.
One and the Trinity
The most incredible and theological thought is the Trinity and one God. How they work together as one. One thought, one purpose, one unity.
Jesus is God
1 Timothy 2:5 (NKJV) 5 For there is one God and one Mediator between God and men, the Man Christ Jesus,
Jesus “I am the way, I am the truth and I am the Life” John 14
(5) You shall love the Lord your God with all your heart, with all your soul, and with all your strength.
Love – to have affection toward,
Jesus extended this out. In a discussion with a “lawyer” or law giver. An interpreter or teacher of the law.
There are three in the Hebrew OT and Four in the NT. What is the difference? In the Hebrew they never saw us as a tri-part being. They did not separate us from who we are and what we believe.
Luke 10:25-27 And behold, a certain lawyer stood up and tested Him, saying, "Teacher, what shall I do to inherit eternal life?" (26) He said to him, "What is written in the law? What is your reading of it?" (27) So he answered and said, "'You shall love the Lord your God with all your heart, with all your soul, with all your strength, and with all your mind,'  and 'your neighbor as yourself.' " 
Heart – emotion “out of the abundance of the heart the mouth speaks”, “where your treasure is there will your heart be” Matthew 6:21