'Observe' in the Bible

You must {carry out} my regulations, and you must observe my statutes by following them; I [am] Yahweh your God.

And you shall observe my statutes and my regulations {by which the person doing them shall live}; I [am] Yahweh.

It [is] {a Sabbath of complete rest} for you, and you shall deny yourselves on the ninth [day] of the month in the evening--from evening to evening you must observe your [extraordinary] Sabbath."

"Speak to the {Israelites}, and say to them, 'When you come into the land that I [am about to] give to you, then the land shall observe a Sabbath for Yahweh.