God forgives every sin you've ever done, and he's going to forgive every sin you'll ever do. When someone sins against you, if you won't forgive them, you're ignoring that you've been forgiven. A poor marriage relationship can hinder your prayer life, and God says if you don't dwell with your wife according to knowledge and give honor to her as a weaker vessel, your prayers will be hindered. Vain repetition in prayer is not pleasing to God, and you must have faith to please him.
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