Drinking energy water won't replenish the spiritual energy he is consuming quickly because his rate of digesting energy water is slow. But the extra spiritual energy from drinking energy water is better than nothing.
The noble said to himself in encouragement, "I'll just hold him back for a few seconds. Once the two armies clash, he won't be able to take full advantage of the Army Breaker."
The Army Breaker divine ability unites an army in body and mind, but its best effect is to conserve and increase the momentum of a charging army. This will make the army unstoppable when they collide with another army.
An army that collides with the Army Breaker will break apart like eggs smashing against rocks. This is where the divine ability gets its name. It is a divine ability for breaking other armies apart.
By disabling the Army Breaker divine ability now, the noble has deprived Isaac of being able to break his army with a single collision.
