Despising God's name is breaking the third commandment, and it goes far beyond foul speech. God's name describes His character, so anyone who uses it in a way that denies who God is becomes unclean and guilty. A person who talks constantly about God yet denies Him in daily life takes His name in vain. The Canaanite nations defiled themselves and the land by this sin, and God warned Israel not to repeat it. Israel profaned the name by offering deceitful, blemished sacrifices while keeping the best for themselves, as Ananias and Sapphira also did. Prayer without obedience is blasphemy, and so is praise offered in rebellion against God's way; both are vain, useless, and contemptible. Blaspheming or cursing the name is a grave offense. Jesus forbids invoking it to back up oaths, because it is too holy for that. Repeating it often or mentioning it only when convenient does not please God, and those who use His names but refuse to obey the character they reveal will not enter the Kingdom. Because believers bear His name from baptism, failing to live up to its reputation also profanes it. Rightly fearing the name means obeying all of God's law and giving Him one's best effort. Those who overcome will receive His name for eternity.