to die: to reach the end of one's life, come to one's end.
This verb comes from the ordinary Greek word for an "end" or "finish," and it began life meaning simply to bring something to a close. Used of a person, it becomes a gentle way of saying that someone has come to the end of their life. It is the softer, more dignified of the New Testament words for dying, closer to English phrases like "passed away" or "reached the end" than to the blunt "died."
Across the New Testament it keeps that one quiet meaning. It reports the death of ordinary people and of famous figures alike, from a synagogue leader's daughter to the patriarch Jacob, from King Herod to Lazarus in the tomb. The writer of Hebrews even uses it of Joseph "coming to his end," catching the sense of a life drawing gracefully to a close.
The one place the word carries extra weight is in a fixed legal command quoted from the law of Moses: "whoever curses father or mother must be put to death." There the plain word for dying is used within a formula for execution, so it means not just that the offender will die but that he is to be handed over to death as a penalty. That courtroom force comes from the setting, not from a second meaning of the word itself.