"The katechon (from Greek: \u03C4\u1F78 \u03BA\u03B1\u03C4\u03AD\u03C7\u03BF\u03BD, \"that what withholds\", or \u1F41 \u03BA\u03B1\u03C4\u03AD\u03C7\u03C9\u03BD, \"the one who withholds\") is a biblical concept which has subsequently developed into a notion of political philosophy.The term is found in 2 Thessalonians 2:6-7 in an eschatological context: Christians must not behave as if the Day of the Lord would happen tomorrow, since the Son of Perdition (the Antichrist of 1 and 2 John ) must be revealed before."@en .