In Luke 15:11-32 Jesus teaches us a parable we understand to be emblematic of God the Father’s forgiving mercy and of how we are to reproach God in repentance.
“A certain man had two sons. And the younger of them said to his father, ‘Father, give me the portion of goods that falls to me.’ So he divided to them his livelihood. And not many days after, the younger son gathered all together, journeyed to a far country, and there wasted his possessions with prodigal living. But when he had spent all, there arose a severe famine in that land, and he began to be in want. Then he went and joined himself to a citizen of that country, and he sent him into his fields to feed swine. And he would gladly have filled his stomach with the pods that the swine ate, and no one gave him anything. But when he came to himself, he said, ‘How many of my father’s hired servants have bread enough and to spare, and I perish with hunger! I will arise and go to my father, and will say to him, “Father, I have sinned against heaven and before you, and I am no longer worthy to be called your son. Make me like one of your hired servants.’ And he arose and came to his father. But when he was still a great way off, his father saw him and had compassion, and ran and fell on his neck and kissed him.And the son said to him, ‘Father, I have sinned against heaven and in your sight, and am no longer worthy to be called your son.’
But the father said to his servants, ‘Bring out the best robe and put it on him, and put a ring on his hand and sandals on his feet. And bring the fatted calf here and kill it, and let us eat and be merry; for this my son was dead and is alive again; he was lost and is found.’ And they began to be merry. Now his older son was in the field. And as he came and drew near to the house, he heard music and dancing. So he called one of the servants and asked what these things meant. And he said to him, ‘Your brother has come, and because he has received him safe and sound, your father has killed the fatted calf.’ But he was angry and would not go in.
Therefore his father came out and pleaded with him. So he answered and said to his father, ‘Lo, these many years I have been serving you; I never transgressed your commandment at any time; and yet you never gave me a young goat, that I might make merry with my friends. ‘But as soon as this son of yours came, who has devoured your livelihood with harlots, you killed the fatted calf for him.’ And he said to him, ‘Son, you are always with me, and all that I have is yours. It was right that we should make merry and be glad, for your brother was dead and is alive again, and was lost and is found.’ “
Metropolitan Kallistos Ware writes:
“The parable of the Prodigal forms an exact ikon of repentance in its different stages. Sin is exile, enslavement to strangers, hunger. Repentance is the return from exile to our true home; it is to receive back our inheritance and freedom in the Father’s house. But repentance implies action: ‘I will rise up and go’…[These two] Sundays spoke to us of God’s patience and limitless compassion, of His readiness to accept every sinner who returns to Him. On the third Sunday, we are powerfully reminded of a complementary truth; no one is so patient and so merciful as God, but even He does not forgive those who do not repent. The God of love is also a God of righteousness, and when Christ comes again in glory, He will come as our judge…
The Great Fast is a preparation for the Second Coming of the Savior, for the eternal Passover in the Age to Come…Nor is the judgment merely in the future. Here and now, each day and each hour, in hardening our hearts towards others and in failing to respond to the opportunities we are given of helping them, we are already passing judgment on ourselves….Before we enter the Lenten fast, we are reminded that there can be no true fast, no genuine repentance, no reconciliation with God, unless we are at the same time reconciled with one another. A fast without mutual love is the fast of demons…We do not travel the road of Lent as isolated individuals but as members of a family.” (Bishop Kallistos Ware in The Bible and the Holy Fathers For Orthodox, pp 710-711)