20 And the disciples having seen, did wonder, saying, `How did the fig-tree forthwith wither?'
Matthew 21:20 Cross References - YLT
Isaiah 40:6-8
6 A voice is saying, `Call,' And he said, `What do I call?' All flesh is grass, and all its goodliness is As a flower of the field:
7 Withered hath grass, faded the flower, For the Spirit of Jehovah blew upon it, Surely the people is grass;
8 Withered hath grass, faded the flower, But a word of our God riseth for ever.