διατηρέωdiatēréō

Same root

• διάdiá · G1223through (in very wide applications, local, causal, or occasional)
• τηρέωtēréō · G5083perhaps akin to G2334 (θεωρέω)); to guard (from loss or injury, properly, by keeping the eye upon; and thus differing from G5442 (φυλάσσω), which is properly to prevent escaping; and from G2892 (κουστωδία), 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)

Where it appears

Appears 2 times in the Bible.

• Luke 2:51 Then he returned to Nazareth with them and was obedient to them. And his mother stored all these things in her heart.
• Acts 15:29 You must abstain from eating food offered to idols, from consuming blood or the meat of strangled animals, and from sexual immorality. If you do this, you will do well. Farewell.”