'Observe' in the Bible

“For cross to the coastlands of Kittim and see,And send to Kedar and observe closelyAnd see if there has been such a thing as this!

The Lord said to me, "I have made you like a metal assayer to test my people like ore. You are to observe them and evaluate how they behave."

Yea, the stork in the heaven knoweth her appointed times; and the turtle and the crane and the swallow observe the time of their coming; but my people know not the judgment of the LORD.

Do not carry any loads out of your houses or do any work on the Sabbath day. But observe the Sabbath day as a day set apart to the Lord, as I commanded your ancestors.

And to the house of the Rechabites said Jeremiah: 'Thus said Jehovah of Hosts, God of Israel, Because that ye have hearkened unto the command of Jonadab your father, and ye observe all his commands, and do according to all that he commanded you;

All the people living in Jerusalem and all the people who came into Jerusalem from the towns of Judah came to observe a fast before the Lord. The fast took place in the ninth month of the fifth year that Jehoiakim son of Josiah was ruling over Judah.