When we sit in judgement of others, we think we are putting ourselves above those we judge. And surely we are attempting to do so.
But what we do not realize is that our judging of others really puts ourselves in a position below others - that of thinking we know what is going on when we don't. This in fact is ignorance - which degrades us in the worst way.
When we judge and condemn others we are bringing to fruit a consciousness that is considering ourselves above others. We are in fact putting ourselves in the position that only God can be in: That of knowing everything.
We don't know everything
Knowing everything is not our natural position. Our senses are limited. Our minds and brains are limited. We cannot claim to understand much at all, because we are limited by nature.
The Supreme Being, however, knows everything and controls everything. Therefore, only He can sit in judgment. Only He can truly understand everyone enough to judge us.
We may be children of God, but we are parts and parcels of God. Consider for example the little finger. The finger cannot see, digest food, walk and do other things other parts of the body can do. But when the finger acts in concert with the rest of the body - when it works on behalf of the body - it assumes its rightful position.
Just consider if the finger were to want to eat by itself. It might stick itself into a dish of food, but it could not consume the food. It could not utilize the food. But if the finger helped the hand to bring the food to the mouth, then the mouth could digest the food, and the nutrients from that food would then get to the finger. The finger would essentially eat when it served the body by providing food to the mouth.
This is our position
When we are separated from God and acting on our own behalf we are empty. We are unfulfilled. This is why so many of us look and never find that perfect soul-mate who will satisfy us. This is why even after marrying our High School sweetheart, having kids and grandkids, and having a comfortable retirement, we still are not satisfied. We still are not fulfilled. This is why so many retired people, after all their accomplishments, are still looking for fulfillment.
But when we assume our natural position as God's loving caregiver - serving God with love - we become fulfilled. This is because this is what we were created for. This also fulfills our ultimate position of humility - not false humility, but the real humility of accepting our actual position as one of God's loving servants.
This is why becoming forgiving of others, as Jesus states, results in our being forgiven. When we are tolerant of others, understanding of others, caring for others, and forgiving of others when they may offend us, we become linked up with the Supreme Being because this is God's nature. God loves us unconditionally, and understands us, is tolerant of us, and is forgiving.
We become linked up with that forgiving nature when we forgive others, and thus we line ourselves up with receiving the forgiving nature of the Supreme Being.
We must learn to forgive
Learning to forgive is part of the purpose of the suffering and strife of the physical world. We are spiritual beings - not these physical bodies. Our bodies are temporary vehicles meant to take us through consequences that provide lessons meant to show us love, forgiveness, humility, and kindness. The physical world is a rehabilitation center for those of us who became self-centered and forgot how to love.
When we receive the consequences of our prior activities we, in fact, get to see how it feels to subject someone else to our selfish acts. Then we get to compare these with acts of kindness. We get to play out our desires and compare the results with acts that help others. Eventually, we learn that helping others and caring for others provides us with more fulfillment than caring only for ourselves. This leads us towards understanding, and towards love, which gradually unveils the Source of love, the Supreme Being.
As we reach a point where we are able to truly forgive others, we also reach the point where the Supreme Being becomes increasingly visible in our lives. Should we be sincere, the Supreme Being will gradually guide us closer and closer to Him, even though we may have rejected Him in the past.
This is because He wants us to come home to Him. He wants us to be happy. This is love. This is forgiveness.