'Warned' in the Bible

Judah spoke to him, saying, "The man solemnly warned us, saying, 'You shall not see my face, unless your brother is with you.'

Moses said to Yahweh, "The people can't come up to Mount Sinai, for you warned us, saying, 'Set bounds around the mountain, and sanctify it.'"

The king of Israel sent to the place which the man of God told him and warned him of; and he saved himself there, not once nor twice.

Moreover by them is your servant warned. In keeping them there is great reward.

But if the watchman sees the sword come, and doesn't blow the trumpet, and the people aren't warned, and the sword comes, and take any person from among them; he is taken away in his iniquity, but his blood will I require at the watchman's hand.