'Sternly' in the Bible

Then Jesus sternly warned him and encouraged him to go at once.

But he sternly ordered them again and again not to tell people who he was.

Peter answered him, "You are the Messiah!" Jesus sternly ordered them not to tell anyone about him.

Many people sternly told him to be quiet, but he started shouting even louder, "Son of David, have mercy on me!"