'Trained' in the Bible

And Abram heareth that his brother hath been taken captive, and he draweth out his trained domestics, three hundred and eighteen, and pursueth unto Dan.

And I am as a trained lamb brought to slaughter, And I have not known That against me they have devised devices: We destroy the tree with its food, and cut him off From the land of the living, And his name is not remembered again.

And Ephraim is a trained heifer -- loving to thresh, And I -- I have passed over on the goodness of its neck, I cause one to ride Ephraim, Plough doth Judah, harrow for him doth Jacob.