What does the difference between “Khatim” and “Khatam” in the Holy Qur’an mean?
The accepted reading is “Khatam”, the seal. The word denotes a rank and a dignity, not merely the last in a line. Even someone who reads “Khatim”, meaning “the one who ends”, can only apply it to the prophets who came before him.
In the verse above the Holy Prophet Muhammad (saw) is called “Khatam an-Nabiyyin”. In Arabic the word “Khatam” is used to distinguish someone in rank. A seal confirms and certifies. The word also carries the sense of ornament, adornment and perfection. So it describes a dignity, not a place at the end of a list.
Some prefer the form “Khatim” and translate it as “the one who ends”. But even then one has to look closely. You can only end what already exists. The verse would then speak of the prophets who had come before him, not of the future. No one can end something that does not yet exist.
And how would he end the earlier prophets? They had long since died. Only one meaningful sense remains. Their mission has been superseded by him, because his blessing surpasses everything that came before him.
This is exactly where a contradiction appears in a widespread idea. According to it, an earlier prophet, Jesus (as), is still alive in heaven and will one day return to rescue the community of the Holy Prophet Muhammad (saw). Then it would not be he who superseded the earlier prophets. Instead, an earlier prophet would have to come to rescue his work. Imagine a house is attacked and no one in the family can defend it. A neighbour comes and saves everyone. For the family that is help, but it is no honour.
That is why the reading “Khatam” fits the Holy Qur’an best. It describes the Holy Prophet Muhammad (saw) as a seal whose rank confirms and surpasses the other prophets.