'Observation' in the Bible

But the chiefs of the children of Ammon said to Hanun their lord, Does it seem to you that David is honouring your father by sending comforters to you? has he not sent his servants to go through the town and make secret observation of it, and overcome it?

But the chiefs of the children of Ammon said to Hanun, Does it seem to you that David is honouring your father, by sending comforters to you? is it not clear that these men have only come to go through the land and to make secret observation of it so that they may overcome it?

It seemed good to me, having made observation, with great care, of the direction of events in their order, to put the facts in writing for you, most noble Theophilus;

And when the Pharisees put questions to him about when the kingdom of God would come, he gave them an answer and said, The kingdom of God will not come through observation: