τηρεῖν

to guard (from loss or injury, properly, by keeping the eye upon; and thus differing from g5442, which is properly to prevent escaping; and from g2892, which implies a fortress or full military lines of apparatus), i.e., to note (a prophecy; figuratively, to fulfil a command); by implication, to detain (in custody; figuratively, to maintain); by extension, to withhold (for personal ends; figuratively, to keep unmarried); by extension, to withhold (for personal ends; figuratively, to keep unmarried)