'Well trained' in the Bible

That day the Benjaminites mustered from their cities twenty-six thousand sword-wielding soldiers, besides seven hundred well-trained soldiers from Gibeah.

From all these troops [were] seven hundred well-trained men {who were left-handed}; each one could sling with a stone at a hair and not miss.

Ten thousand men, well-trained soldiers from all Israel, then made a frontal assault against Gibeah -- the battle was fierce. But the Benjaminites did not realize that disaster was at their doorstep.

Abijah launched the attack with 400,000 well-trained warriors, while Jeroboam deployed against him 800,000 well-trained warriors.

Abijah and his army thoroughly defeated them; 500,000 well-trained Israelite men fell dead.

All of them are skilled with a sword, well-trained in the art of warfare. Each has his sword at his side, to guard against the terrors of the night.

"Ephraim, the well-trained heifer, loves to thresh grain, so I will spare her neck. I will turn Ephraim into a pack animal. Judah will pull the plow, and Jacob will turn up the fallow ground.

"Therefore," He said, "remember that every Scribe well trained for the Kingdom of the Heavens is like a householder who brings out of his storehouse new things and old."

namely, a man of unquestionable integrity, the husband of one wife, having children who believe, not accused of being immoral or rebellious.

But, to such as are mature, pertaineth, the strong food, to them who, by reason of habit, have their organs of perception well trained for discriminating both good and evil.

Their very eyes are full of adultery--being eyes which never cease from sin. These men set traps to catch unstedfast souls, their own hearts being well trained in greed. They are fore-doomed to God's curse!