The definition of "Force" and the use of "force in the commission of Rape."
1) "Force is not limited to the use of physical violence."

2) "The use of a threat of physical violence, or intimidation,
duress, coercion, threat of Sin or guilt, force of commandment or law or
argument or persuasion, to cause someone to engage in an act of sex
without their willing and knowledgeable consent, is Force."

Convincing your wife that she will be committing a sin if she does not
submit to your demand for sex, is coercion based on fear of sin and
guilt, and engaging i sex under those terms is an act of rape.