Ether 3:17

And now, as I Moroni, said I could not make a full account of these things which are written, therefore it sufficeth me to say, That Jesus shewed himself unto this man in the spirit, even after the manner and in the likeness of the same body, even as he shewed himself unto the Nephites;

I, Moroni, cannot write everything about these things. So I will just say this: Jesus showed himself to this man in the spirit. He looked the same way he looked when he showed himself to the Nephites.

Now I, Moroni, can’t give a full account of everything written here, so I’ll just say this: Jesus showed himself to this man in the spirit—in the same form and likeness he would later show himself to the Nephites.