And when they had lift up their eyes,.... And "looked round about", as Mark says, to see whether the same objects still continued, as Moses and Elias; and the bright cloud:they saw no man; neither Moses nor Elias, who were both gone: signifying, that though the law and the prophets were till this time, they were now finished and completed, and the Mosaic economy was to be no more; as these men appeared no more after, nor will they till the second coming of Christ.
And Mark has it, "they saw no man any more"; that is, these men any more, neither then, nor afterwards, "save Jesus only". Mark adds, "with themselves"; in the same form as before his transfiguration.
Christ is the only Mediator, Saviour, and Redeemer; the only Prophet, Priest, and King; and who only is to be, and can be beheld as such; and who does, and will abide with his people; and helps, comforts, and saves them, when none else can.