A.T. Robertson Commentary Luke 19:29

"And it came to pass, when he drew nigh unto Bethphage and Bethany, at the mount that is called Olivet, he sent two of the disciples," — Luke 19:29 (ASV)

Unto Bethphage and Bethany (εις Βηθφαγη κα Βηθανια). Both indeclinable forms of the Hebrew or Aramaic names. In Mr 11:1 "Bethany" is inflected regularly, which see.

Of Olives (Ελαιων). As in Mr 11:1; Matthew 21:1, though some editors take it to be, not the genitive plural of ελαια (olive tree), but the name of the place Olivet. In the Greek it is just a matter of accent (circumflex or acute) Olivet is correct in Ac 1:12. See on Mt 21:1ff.; Mr 11:1ff. for details.