'Trained' in the Bible

When Abram heard that his nephew [Lot] had been captured, he armed and led out his trained men, born in his own house, [numbering] three hundred and eighteen, and went in pursuit as far [north] as Dan.

Courageous men from the Gadites came over to David in the stronghold in the wilderness, men trained for war, who could handle shield and spear, whose faces were like the faces of lions, and who were swift as gazelles on the mountains.

So their number [who led the remainder of the 4,000], with their relatives who were trained in singing to the Lord, all who were skillful, was 288.

Now send me a man who is skilled to work in gold, silver, bronze, and iron, and in purple, crimson, and blue fabrics, and who knows how to make engravings, to work with the skilled men who are with me in Judah and Jerusalem, whom my father David provided.

the son of a Danite woman and a Tyrian father. He is trained to work in gold, silver, bronze, iron, stone, and wood; in purple, blue, and crimson fabrics, and in fine linen. He is able to make any kind of engraving and to carry out any design given him. He will work with your skilled men and those of my lord, David your father.

“Can the Ethiopian change his skinOr the leopard his spots?Then you also can do goodWho are accustomed to evil and even trained to do it.

Although I trained and strengthened their arms [for victory over their enemies],Yet they devise evil against Me.