Dict: easton - Key

Key @ frequently mentioned in Scripture. It is called in Hebrew maphteah, i.e., the opener kjv@Judges:3:25); and in the Greek New Testament kleis, from its use in shutting kjv@Matthew:16:19; kjv@Luke:11:52; kjv@Revelation:1:18, etc.). Figures of ancient Egyptian keys are frequently found on the monuments, also of Assyrian locks and keys of wood, and of a large size (comp. kjv@Isaiah:22:22). The word is used figuratively of power or authority or office kjv@Isaiah:22:22; kjv@Revelation:3:7; kjv@Revelation:1:8; comp. kjv@9:1; 20:1; comp. also kjv@Matthew:16:19 kjv@Matthew:18:18). The "key of knowledge" kjv@Luke:11:52; comp. kjv@Matthew:23:13) is the means of attaining the knowledge regarding the kingdom of God. The "power of the keys" is a phrase in general use to denote the extent of ecclesiastical authority.