Jeremiah 7:23 (NRSV) But this command I gave them, "Obey my voice, and I will be your God, and you shall be my people; and walk only in the way that I command you, so that it may be well with you."
Hosea 9:17 (NRSV) Because they have not listened to him, my God will reject them; they shall become wanderers among the nations.
Matthew 7:21 (KJV) Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Romans 5:19 (KJV) 19 For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.
Never think that Jesus commanded a trifle, nor dare to trifle with anything he has commanded. Dwight Lyman Moody (1837-1899)
Draper's Book of Quotations for the Christian World.