Judaism: His story is read annually on Yom Kippur during the Mincha (afternoon) service to emphasize the power of sincere repentance and divine forgiveness.
Christianity: Jesus references the "Sign of Jonah" in the New Testament Gospels, comparing Jonah's three days in the whale's belly to His own three days in the tomb before resurrection.
Islam: Revered as Yunus (and Dhu'n-Nun, "Companion of the Fish") in the Quran, where an entire chapter (Surah Yunus) is named after him, celebrating his heartfelt prayer of repentance.