Matthew 6:14
"For if ye forgive men their trespasses, your heavenly Father will also forgive you:"Matthew 6:14 (KJV)
Context from Matthew 6
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And forgive us our debts, as we forgive our debtors.
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And lead us not into temptation, but deliver us from evil: For thine is the kingdom, and the power, and the glory, for ever. Amen.
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For if ye forgive men their trespasses, your heavenly Father will also forgive you:
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But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.
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Moreover when ye fast, be not, as the hypocrites, of a sad countenance: for they disfigure their faces, that they may appear unto men to fast. Verily I say unto you, They have their reward.