It was Elijah and Moses, on the Mount of Transfiguration.  That’s where Jesus talked to these two while in a form closer to His true, glorified stated.  Saving that lesson for later, we move on.  With all the feasts mentioned in Leviticus, you can point out the one below that doesn’t come until several books later, right?

-Feast of Purim-

-Feast of Weeks-

-Feast of Trumpets-

-Feast of Firstfruits-