BINGO!
Do you practice the Law of God as Christ practices the Law of God? Do you teach others that the 7th day Sabbath is no longer pertains to Christians and that, under our contract with Christ, we are no longer obligated to keep it?
By the very act of denying even the least of His commandments that He taught us to keep by His example of keeping them Himself, we are denying that we are His. The Sabbath is not the least, it is in the top 10! See Isaiah 56
He also knows we'll fail - hence His Grace and forgiveness.
That's not to confuse Forgiveness of sin with Permission to sin, however -- as the homosexual community does. They operate not in the Repentant and Forgiven body of Christ -- but against that body in the spirit of anti-Christ.
Matt 5:17-20
17 "Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18 I tell you the truth, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished. 19 Anyone who breaks one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven. 20 For I tell you that unless your righteousness surpasses that of the Pharisees and the teachers of the law, you will certainly not enter the kingdom of heaven."
NIV