Molon labe was an Ancient Greek expression that meant "come and get them", as an expression of defiance. According to Plutarch, molon labe was the expression used by King Leonidas I of Sparta against Xerxes the Great when Xerxes requested that Leonidas and his 300 soldiers surrender their weapons. The expression molon labe was famously translated and used in the movie 300, re-enacting the occasion in which it was purportedly used by King Leonidas, before battle.
Molon labe was also historically used by defenders of the 2nd amendment in the United States, asserting their right to bear arms, and inviting the government to "come and get them".
The correct pronunciation of molon labe is moh-LOHN lah-BEH.
In both words the stress is pronounced on the second syllable and all the vowels are pronounced as the equivalent of short vowels in English. This means that "o" is pronounced as "oh", "a" is pronounced as "ah" and "e" is pronounced as "ah".
It is important to note that this is the Classical Greek pronunciation of molon labe, where the more modern pronunciation would be moh-LOHN lah-VEH, with a "v" pronounced in place of the "b". However, it is not known how the Spartans would have pronounced molon labe using their native Doric dialect. It is probable that Plutarch would have pronounced "labe" with something between a "b" and a "v".