'Trees' in the Bible

saying, Hurt not the earth, neither the sea, nor the trees, till we shall have sealed the servants of our God on their foreheads.

And the first sounded, and there followed hail and fire, mingled with blood, and they were cast upon the earth: and the third part of the earth was burnt up, and the third part of the trees was burnt up, and all green grass was burnt up.

These are the two olive trees and the two candlesticks, standing before the Lord of the earth.