“'Father, I have sinned against heaven and against you; I no longer deserve to be called your son!” (Luke 15:21)

The prodigal son wanted to say more, “Treat me as you would treat one of your hired workers.” (Luke 15:19), but “While he was still a long way off, his father caught sight of him, and was filled with compassion. He ran to his son, embraced him and kissed him.” (Luke 15:20), he therefore had no time to carry on.

Even though he had the chance to continue, his father would not take it at face value. Because his father said, “This son of mine was dead, and has come to life again” (Luke 15:24)

The parable of the lost sheep is the best illustration:

”What man among you having a hundred sheep and losing one of them would not leave the ninety-nine in the desert and go after the lost one until he finds it?

And when he does find it, he sets it on his shoulders with great joy and, upon his arrival home, he calls together his friends and neighbors and says to them, 'Rejoice with me because I have found my lost sheep.'
I tell you, in just the same way there will be more joy in heaven over one sinner who repents than over ninety-nine righteous people who have no need of repentance. (Luke 15:4-7)

The father comforted his elder son, “My son, you are here with me always; everything I have is yours.” (Luke 15:31)

God loves the repentant sinners. He also surely loves the righteous, the ones who do not need to repent. God is merciful and just as well.