'Somebody' in the Bible

Now after these things somebody told Abraham, "Look, Milcah has given birth to sons for your brother Nahor.

Three days later, somebody reported to Laban that Jacob had left,

"Look!" somebody reported to Tamar, "Your father-in-law is going to Timnah to shear his sheep."

Some time later, somebody informed Joseph, "Your father is ill!" So he took his two sons Manasseh and Ephraim with him to visit Jacob.