David therefore sent out spies, and understood that Saul was come in very deed.
David sent out spies and learned that Saul had actually come.
David therefore sent out spies, and understood that Saul was come of a certainty.
he sent spies and discovered that Saul had definitely arrived.
he sent explorers, and he learned that he certainly had arrived in that place.
He sent spies, and learned that he was most certainly come thither.