Exodus 20:5-7

You shall not worship them nor serve them; for I, the LORD your God, am a jealous (impassioned) God [demanding what is rightfully and uniquely mine], visiting (avenging) the iniquity (sin, guilt) of the fathers on the children [that is, calling the children to account for the sins of their fathers], to the third and fourth generations of those who hate Me, [Is 42:8; 48:11] but showing graciousness and steadfast lovingkindness to thousands [of generations] of those who love Me and keep My commandments. “You shall not take the name of the LORD your God in vain [that is, irreverently, in false affirmations or in ways that impugn the character of God]; for the LORD will not hold guiltless nor leave unpunished the one who takes His name in vain [disregarding its reverence and its power].