Monotheism - believing only one God - was a distinctive feature of Hebrew religion. Many ancient religions believed in many gods. But the God of Abraham, Issac, & Jacob is the God of the whole earth, the only true God. This was an important insight for the nation of Israel, because they were about to enter the promise land filled with people who believed in many gods. Both then & today, there are people who prefer to place their trust in many different "gods." But the day is coming when God will be recognized as the only one. He will be King over all the earth.
We are to love God, think constantly about his commandments, teach his commandments to our children, & live our daily lives by the guidelines in his Word. God emphasized the importance of parents teaching the Bible to their children. The church & Christian schools cannot be used to escape from the responsibility. Eternal truths are most effectively learned in the loving environment of a God-fearing home.
Jesus said that loving God with all your heart, soul, & mind is the first & greatest commandment. This command, combined with the command to love your neighbor, on compass all the other Old Testament laws.
The Hebrews were extremely successful at making religion an integral part of life. The reason for their success was that religious education was life-oriented, not information-oriented. They used the context of daily life to teach about God. The key to teaching your children to love God is stated simply & clearly in these verses. If you want your children to follow God, you must make God a part of your everyday life. You must teach your children to see God in all aspects of life, not just those that are church related.
Reference summary used from the Life Application Bible KJV, Tyndale House Publishers, Inc., Wheaton, Illinois