'Observe' in the Bible

But the children rebelled against me; {they did not walk in my statutes}, and {they did not observe my regulations}, which [if] a person does them, then he will live by them. My Sabbaths they desecrated, and I decided to pour out my rage on them, to finish my anger against them in the desert.

" '"And my servant David [will be] king over them, and one shepherd will be for all of them, and in my regulations they will go, and my statutes they will observe, and they will do them.

And you did not observe the responsibility of my sanctuary, but you appointed [them] as the keepers of my responsibility in my sanctuary for you."

"They shall come to my sanctuary, and they shall approach my table to serve me, and they will observe my requirement.