It was to be taught, not worn as jewelry. The word of God must bind our lives, our deeds and thoughts. And when it does it will produces evidences in our attitudes and lives. This is the mark of the true believer, the redeemed child of God. Born again by grace.
Every person bears one mark or another.
Either he evidences the binding of God's word on his hands and head. Or he evidences that he is still separated from God with a lost and deceived soul. Those who bear the mark of being a child of God have often been the victims of persecutions, shut out of business transactions or denied jobs. Its increasingly difficult for young believers to find work if they determine to keep the Sabbath holy and refrain from labor as the fourth commandment requires. But those whose acts and minds, whose hands and hearts, show that they are bound to a different standard, the standard of evil, of the beast, will find a welcome comraderie in the world that is offended by Christ.