'Trained' in the Bible

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.

and Jehozabad led 180,000 trained warriors.

Then Amaziah got all Judah together and put them in order by their families, even all Judah and Benjamin, under captains of thousands and captains of hundreds: and he had those of twenty years old and over numbered, and they came to three hundred thousand of the best fighting-men, trained for war and in the use of the spear and the body-cover.

Uzziah had an army of skilled warriors trained for battle. They were organized by divisions according to the muster rolls made by Jeiel the scribe and Maaseiah the officer under the authority of Hananiah, a royal official.

And under their orders was a trained army of three hundred and seven thousand, five hundred, of great strength in war, helping the king against any who came against him.