And Elijah appeared to them with Moses, and they were talking with Jesus.
Mark 9:4
Surrounding context
9:3 His clothes became shining, exceedingly white, like snow, such as no launderer on earth can whiten them.
9:4 And Elijah appeared to them with Moses, and they were talking with Jesus.
9:5 Then Peter answered and said to Jesus, "Rabbi, it is good for us to be here; and let us make three tabernacles: one for You, one for Moses, and one for Elijah"--