To the apostles who forsook everything to follow Him solely at His invitation, some of whom were guided by John the Baptist during a time when His teachings were not fully revealed and His miraculous works were limited; to these individuals who endeavored to spread the message of Christ throughout the world, a distinct and greater reward awaits: they are destined to share in the splendor of Christ. This is why Jesus proclaimed that at the culmination of the age, when the Son of Man manifests in His heavenly glory, the apostles will partake in this glory with Him. Their exaltation above all humanity will stand as a testament against the twelve tribes of Israel that chose not to believe in Him.
As noted by John Chrysostom, the Apostles will not judge the Jewish people in a judicial sense but rather as witnesses. He likens their role to that of the Queen of the South, who would condemn that generation, and the Ninevites, who will also bear witness against the unbelievers. The Jews shared the same laws and traditions and lived analogous lives to the Apostles. Therefore, when they claim in their defense that they could not accept Christ’s teachings due to legal prohibitions, the Lord will refer them to the Apostles who upheld the same law yet believed. As previously stated, "Therefore they shall be your judges." The thrones signify not mere seats but profound glory and honor.