The Talmud (Jerusalem Talmud, Peah 1:1) presents two contrasting stories that illustrate a paradox: a person who treats their parents well can still end up in Gehinnom (the place of spiritual purification after death), while a person who treats their parents badly can end up in paradise. Everything depends on the intention behind the act.
A man fed his father fattened chickens — the finest food available. One day the father asked: "My son, where do you get such food?" The son replied with contempt: "Shut up, old man, and eat — just as a dog shuts up and eats." This man fed his father well and inherited Gehinnom, because the food was served with resentment. The body was nourished; the soul was poisoned.
Another man worked grinding millstones — one of the most exhausting forms of labor. His father received a summons to serve in the king's forced labor gang. The son said: "Father, take my place here at the millstones, and I will go serve the king in your place." The son did not feed his father fine food. He gave him hard labor. But he took the harder, more dangerous labor upon himself — and this act of sacrifice, this willingness to suffer so his father would not, earned him paradise.
The lesson was unmistakable: God does not measure the size of the gift. He measures the size of the heart. A chicken served with love is better than a feast served with contempt. A millstone offered in sacrifice is worth more than gold offered in resentment. Honor your parents not with your wallet but with your will.