'Observed' in the Bible

When the LORD observed that they had humbled themselves, the LORD spoke to Shemaiah, "They have humbled themselves, so I won't destroy them. Instead, I'll grant them some deliverance by not pouring out my indignation on Jerusalem, using Shishak to do it.

So when the chariot commanders observed Jehoshaphat, they said by mistake, "It's the king of Israel!" and they turned aside to attack him. But Jehoshaphat cried out to the LORD, who helped him, and God diverted them from him.

The Israelis who were present in Jerusalem observed the Festival of Unleavened Bread for seven days with immense gladness, and the descendants of Levi and priests praised the LORD throughout each day, singing mightily to the LORD.

Josiah observed the Passover to the LORD in Jerusalem. They slaughtered the Passover on the fourteenth day of the first month.

This Passover celebration was observed during the eighteenth year of the reign of Josiah.