Which phrase in this excerpt from the redeemed captive by john williams demonstrates a puritan influence?

my master took hold of my hand to force me to cross myself; but i struggled with him, and would not suffer him to guide my hand; upon this, he pulled off a crucifix from his own neck, and bade me kiss it; but i refused once and again; he told me he would dash out my brains with his hatchet if i refused.