'Stern' in the Bible

But to keep it from spreading further among the people and the nation, let us [sternly] warn them not to speak again to anyone in this name.”

Then fearing that we might run aground somewhere on the rocks, they dropped four anchors from the stern [to slow the ship] and kept wishing for daybreak to come.

But striking a reef with waves breaking in on either side, they ran the ship aground. The prow (forward point) stuck fast and remained immovable, while the stern began to break up under the [violent] force of the waves.