Read Mark 11:25 Using Other Translations
And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.
And whenever you stand praying, forgive, if you have anything against anyone, so that your Father also who is in heaven may forgive you your trespasses."
But when you are praying, first forgive anyone you are holding a grudge against, so that your Father in heaven will forgive your sins, too. ”