Once, when the family were all going away, his uncle left the house in charge of him and another apprentice, telling them to defend themselves if any robbers came. Having a mind to try the courage of the lads, he returned soon after, and attempted to force a window in the back part of the house, which opened upon a narrow alley inclosed by a high fence. As soon as Isaac heard the noise, he seized an old harpoon that was about the premises, and told his companion to open the window the instant he gave the signal. His orders were obeyed, and he flung the harpoon with such force, that it passed through his uncle's vest and coat, and nailed him tight to the fence. When he told the story, he used to say he never afterward deemed it necessary to advise Isaac to defend himself.
Among the apprentices was one much older and stouter than the others. He was very proud of his physical strength, and delighted to play the tyrant over those who were younger and weaker than himself. When Isaac saw him knocking them about, he felt an almost irresistible temptation to fight; but his uncle was a severe man, likely to be much incensed by quarrels among his apprentices. He knew, moreover, that a battle between him and Samson would be very unequal; so he restrained his indignation
