Mark 8:30 in the King James Version
And he charged them that they should tell no man of him.
Context
29 He said to them, “But who do you say that I am?” Peter answered, “You are the Christ.”
30 He commanded them that they should tell no one about him.
31 He began to teach them that the Son of Man must suffer many things, and be rejected by the elders, the chief priests, and the scribes, and be killed, and after three days rise again.