John 12:13-14

13 they took the branches of the palm trees, and went out to meet him, and cried out, "Hosanna! Blessed is he who comes in the name of the Lord, the King of Israel!"

14 Jesus, having found a young donkey, sat on it. As it is written, 

Revelation 7:9-10

9 After these things I looked, and behold, a great multitude, which no man could number, out of every nation and of all tribes, peoples, and languages, standing before the throne and before the Lamb, dressed in white robes, with palm branches in their hands.  10 They cried with a loud voice, saying, "Salvation be to our God, who sits on the throne, and to the Lamb!"