According to Christian Universalism, Jesus has a deeper understanding of the nature of God. Some interpretations of the New Testament reveal that Jesus, through his understanding of God, revealed to humans that God is not Just, but rather Generous. Generosity and Justice are contradicting terms. Justice is to give each exactly what he deserves. Generosity is to give each more than he deserves. Some argue that Jesus through his teachings revealed a generous God rather than a just one.
To inquire the validity of those blatant interpretations, those Christian Universalists provide biblical stories from the New Testament.
One such story is the parable of the "prodigal son" (Luke 15:11-32). A man had two sons. The younger asked his father to divide his father's fortune between the two of them. The man divided his fortune between his two sons. The elder son stayed with his father, helped his father, and was very obedient. On the other hand, the younger son took the fortune and moved out of his father's mansion and started spending the money on luxury. The day came when that youngster lost all his money and was in dire need. He thought to himself that he'd better get back to his father's mansion. He thought that working as a servant at his father's mansion was better than how he is living now. The youngster headed back home, and when his father saw him from a distance, he ordered his servants to make a feast. The father joyfully welcomed his returning son and asked him to join the feast to celebrate the return of his son. The elder son was confused, he asked his father: "I have been always by your side. I have been always your obedient son. You never made a feast in my honor.". The father answered: "You have been always with me, and all I have is you. But your brother was dead and now alive, he was lost and now found."
The injustice in the parable of the "prodigal son" is evident. The elder son was surprised by the obvious injustice, and reported to his father. The father in that story is being generous to his youngster. He didn't deserve his father's compassion, but the father gave it anyways. So if Jesus wanted to teach humans something by that parable, it would be that God is generous, not just.
I believe Jesus had a greater understanding of God than perhaps any other man. In turning to his parables, I believe that Jesus teaches us that God is not just. In the parable of the laborers in the vineyard (Matthew 20: 1-16) the landowner (God) is not just, he is generous. In the parable of the prodigal son (Luke 15:11-32) the elder brother is quick to point out the injustice of his younger brother’s being welcomed back home. But the father’s love and compassion for both his sons outweighs any concerns for justice. When the woman caught in adultery was brought before Jesus (John 8:1-11) he came to her defense, even though the just law of Moses would have had her stoned. And as Jesus hung on the cross, he did not call down justice upon his persecutors, but forgiveness (Luke 23: 34).
Justice would have us say, “An eye for an eye and a tooth for a tooth.” But Jesus said, “Do not resist an evildoer. But if anyone strikes you on the right cheek, turn the other also.” (Matthew 5: 39) Justice would have us do to others as they have done to us. But Jesus said, “In everything do to others as you would have them do to you; for this is the law and the prophets.” (Matthew 7:12) He also said, “Love your enemies and pray for those who persecute you, so that you may be children of your Father in heaven: for he makes his sun rise on the evil and on the good, and sends rain on the righteous and on the unrighteous.” (Matthew 5: 44-45) Justice must have its roots in judgment. But Jesus said, “Do not Judge.” (Matthew 7: 1) All this indicates to me a God of love and mercy; not justice. (source)
PS: Inspired by this article [recommended-read]
PS: For biblical references, download the New Testament (PDF)