The word iniquity is a biblical term and defined as a particular weakness in our forefathers that can be passed down through many generations. In other words, when you think about your family can you see a pattern of same behavior across generations? If you do, this would be considered iniquity.
This is a wonderful opportunity for you and your partner to have a discussion regarding iniquity. Although iniquities can be passed down through generations there is a way to ensure that it does not negatively impact future generations. This is important for you and your partner to research and discuss together.