'Trained' in the Bible

The son of a woman of the daughters of Dan, whose father was a man of Tyre, an expert worker in gold and silver and brass and iron, in stone and wood, in purple and blue and fair linen and red, trained in the cutting of every sort of ornament and the invention of every sort of design; let him be given a place among your expert workmen and those of my lord, your father David.

And after him Jehozabad, and with him a hundred and eighty thousand trained for war.

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.

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.