'Observe' in the Bible

"The Israelis are to observe the Passover at its appointed time

on the fourteenth day of this month. You are to observe it at this appointed time between the evenings. You are to observe it according to all its decrees and laws."

So Moses instructed the Israelis to observe the Passover.

But there were men who couldn't observe the Passover that day because they had come in contact with a corpse. That very day, they approached Moses and Aaron

"Instruct the Israelis that when any of you or your descendants becomes unclean due to contact with a corpse, or if he is on a long journey, he nevertheless is to observe the LORD's Passover.

They are not to leave any of it to remain until morning nor are they to break any of its bones. They are to observe it according to all the statutes of the Passover.

Now as to the person who is clean and isn't traveling, but fails to observe the Passover, that person is to be eliminated from his people, because he didn't bring an offering to the LORD at its appointed time. That person is to bear his sin.

If a resident alien lives with you and wants to observe the LORD's Passover, let him observe it according to the statutes and laws of the Passover. You are to maintain the same statute for the resident alien as you do for the native of the land."

See what the land is like. Observe whether the people who live there are strong or weak, or whether they're few or numerous.

"Here's what you are to do when you all go astray and fail to observe all these commands that the LORD had spoken to Moses,

That way, when you see the tassel, you'll remember all the commands of the LORD and you'll observe them. Then you won't seek your own interests and desires that lead you to be unfaithful.

Therefore, remember to observe all my commands and to be holy in the presence of your God.

I can see him, but not right now. I observe him, but from a distance. A star streams forth from Jacob; a scepter arises from Israel. He will crush Moab's forehead, along with all of Seth's descendants.