The concept of the Trinity has no practical daily function. On the other hand, if failure to live a good life meant you were going to spend hundreds of years in torment because Jesus didn’t really pay the full price of your sins, don’t you think SOMEONE would have mentioned it?
Something like, “I say then, walk by the Spirit and you will not carry out the desire of the flesh. After all, who wants to spend hundreds of years being tortured by God because you didn’t try hard enough in this world?”
It’s not this “tried enough” that counts, it’s the belief that Yeshua is the Son and believe in him who took on the sins of the world; yours, mine, everyone.
among others, the biggest problem with the mythical doctrine of purgatory is it diminishes Christ’s sacrifice for us.
And here we have the Protestant misunderstanding of redemption. Redemption is not merely the payment of a penalty for our external sinful acts; it is the cleansing of the disordered habits of the soul that cause us to sin. This cleansing is wholly the act of God; the souls in Purgatory are completely passive to God's cleansing action. Protestantism is a return to the external legalism of the Pharisees which our Lord opposed. As for someone having mentioning it, is Jesus good enough:
Then Peter approaching asked him, “Lord, if my brother sins against me, how often must I forgive him? As many as seven times?” Jesus answered, “I say to you, not seven times but seventy-seven times. That is why the kingdom of heaven may be likened to a king who decided to settle accounts with his servants. When he began the accounting, a debtor was brought before him who owed him a huge amount. Since he had no way of paying it back, his master ordered him to be sold, along with his wife, his children, and all his property, in payment of the debt. At that, the servant fell down, did him homage, and said, ‘Be patient with me, and I will pay you back in full.’ Moved with compassion the master of that servant let him go and forgave him the loan. When that servant had left, he found one of his fellow servants who owed him a much smaller amount. He seized him and started to choke him, demanding, ‘Pay back what you owe.’ Falling to his knees, his fellow servant begged him, ‘Be patient with me, and I will pay you back.’ But he refused. Instead, he had him put in prison until he paid back the debt. Now when his fellow servants saw what had happened, they were deeply disturbed, and went to their master and reported the whole affair. His master summoned him and said to him, ‘You wicked servant! I forgave you your entire debt because you begged me to. Should you not have had pity on your fellow servant, as I had pity on you?’ Then in anger his master handed him over to the torturers until he should pay back the whole debt. So will my heavenly Father do to you, unless each of you forgives his brother from his heart.” (Matthew 10:21-35)Asking for forgiveness through faith alone is not enough. Our Lord clearly shows that we must also, by his grace, remove the disorder of the heart that causes us to sin against both God and our neighbors. If this is not accomplished here, then God will finish this operation in Purgatory.