From “Growing in the character of a disciple”: Chapter 13 – Some common errors and areas of confusion about what forgiveness is and how, and why, we are to do it
There is another good reason to forgive others. It is that when we judge other people (in the wrong sense of that word) we bring God’s judgment upon ourselves. Moreover, He has said that He will use the same standards, or criteria, to judge us as we have used to judge others. So, if we are merciful and forgiving with others, then God will be merciful and forgiving with us. But if we are harsh, strict and unyielding, then He will be like that with us:
1“Do not judge so that you will not be judged. 2“For in the way you judge, you will be judged; and by your standard of measure, it will be measured to you.
Matthew 7:1-2 (NASB)
“Blessed are the merciful, for they shall obtain mercy.
Matthew 5:7 (RSV)