'Warned' in the Bible

Whenever they marched out, the hand of the LORD was against them for evil, as the LORD had warned, and as the LORD had sworn to them; and they were in sore straits.

And the king of Israel sent to the place which the man of God told him and warned him of, and he was on his guard there. That took place not once, nor twice.

And besides, my son, be warned by them: of making many books there is no end, and much study is a weariness of the flesh.

But if the watchman see the sword coming, and blow not the trumpet, and the people be not warned, if the sword come and take a person from among them, he is taken away in his iniquity; but his blood will I require at the watchman's hand.