'Watch' in the Bible

Absalom commanded his servants, saying, "Please watch. At the moment the heart of Amnon [is] {tipsy} with wine, then I shall say to you, 'Strike Amnon down,' and you shall kill him! Don't be afraid. [Is] it not I myself who has commanded you? Be courageous and be {valiant!}

So Absalom fled, and the young man who [was] keeping watch lifted up his eyes and saw, and there were many people coming from the road behind him from the side of the mountain.

And Ahithophel said to Absalom, "Go to the concubines of your father whom he left behind to watch over the house, then all of Israel will hear that you made yourself odious to your father, and {all of your followers will be motivated}!"