Wherefore do ye spend money for that which is not bread? and your labour for that which satisfieth not? hearken diligently unto me, and eat ye that which is good, and let your soul delight itself in fatness. So here לא עץ lo ets means him who is far from being an inert piece of wood, but is an animated and active being; not an instrument, but an agent.
Isaiah 55:2Wherefore do ye spend - Why should ye be so zealously attached to a doctrine from which your souls derive neither comfort nor nourishment?