'Maintain' in the Bible

I charged them, "Do not open the gates of Jerusalem until mid-day. Until then, let everyone stand watch, keeping the gates shut and locked. Appoint security watches from those who live in Jerusalem. Everyone should maintain his own watch near his house."

We the priests, the descendants of Levi, and the people cast lots to determine when to bring the wood offering into the Temple of our God, just as our ancestors' families were appointed annually to maintain the altar fire of the LORD our God, as recorded in the Law.