Mark 9:8

And suddenly looking round about, they saw no one any more, save Jesus only with themselves.

See under preceding verses and also further comment on this episode in my Commentary on Matthew, Matthew 17:1ff.

Jesus only ... Christ is all and in all. Necessary as Moses and Elijah were in the pre-Christian ages, humanity is no more required to heed the systems which those ancient worthies represent. They remain pertinent to Christian thought only in the sense of pointing the way to Christ. That pertinence, of course, is of vast significance and contains the most vivid and overwhelming evidence unfolding the purpose of God in Christ; but, despite this, the law and the prophets have given place to the Christ of the ages.