'Observed' in the Bible

When they observed the boldness of Peter and John and realized that they were uneducated and untrained men, they were amazed and recognized that they had been with Jesus.

And God gave Abraham a covenant [a formal agreement to be strictly observed] of [which] circumcision [was the sign]; and so [under these circumstances] Abraham became the father of Isaac, and circumcised him on the eighth day; and Isaac [became the father] of Jacob, and Jacob [became the father] of the twelve patriarchs.

[you] who received the law by directions of angels and have not observed [it]!"

Then even Simon himself believed. And after he was baptized, he went around constantly with Philip and was astounded as he observed the signs and great miracles that were being performed.

and looking closely at it, I saw all kinds of the four-footed animals of the earth and the wild beasts and the crawling creatures and the birds of the air [both clean and unclean according to the Law],

Now while Paul was waiting for them in Athens, his spirit was provoked within him [when he] observed the city was full of idols.

For as I passed along, and observed the objects of your worship, I found also an altar with this inscription, TO AN UNKNOWN GOD. What therefore ye worship in ignorance, this I set forth unto you.

If then Demetrius and the craftsmen [who are] with him have a complaint against anyone, the court days are observed and there are proconsuls--let them bring charges against one another!