'Ago' in the Bible

And as for thine asses that were lost three days ago, set not thy mind on them; for they are found. And on whom is all the desire of Israel? Is it not on thee, and on all thy father's house?

Then David said to him, “Who do you belong to? Where are you from?”“I’m an Egyptian, the slave of an Amalekite man,” he said. “My master abandoned me when I got sick three days ago.

The Egyptian replied, "I'm a young Egyptian man, the slave of an Amalekite man. My master abandoned me, because I got sick three days ago. We raided the Negev of the Cherethites, the territory that belongs to Judah, and the Negev of Caleb, and we set Ziklag on fire."