How do I answer someone who asks about reconciling the death of the son of Adam once in the Gospel with Jesus's raising of "Lazarus," which means that Lazarus died twice?

Allah Almightyخصص the prophets with clear signs, which varied according to what their people were known for. The sign of Jesus, peace be upon him, was healing the blind and the leper, and raising the dead, by Allah's permission. These signs were extraordinary and a breaking of norms, to affirm the prophet and as a sign of his message. The Qur'an contains examples of raising the dead in this world, such as the story of the murdered man in the time of Moses, peace be upon him, and the revival of the man and his donkey after a hundred years, and the revival of many people, and the revival of some of Moses' people after they were struck by lightning. All of this is an exception to the general rule that creation dies one death and does not return to this world thereafter. These incidents have great wisdom, including proving Allah's power to resurrect creation on the Day of Judgment, and making them a sign of the prophet's truthfulness.