I love the Bible. But I have to say, if one day I'm walking and all that happens before me, I'm going to have to seriously reconsider munching on the wild berries and mushrooms I found along the way. Seriously.
We are like the trees and mountains and hills. This may be about saints in Heaven or brethren praising God and welcoming a soul that got saved. Jesus compares trees with individuals, and groups (wild and fruitful olive tree). Mountains and hills are (I think) different nations of groups of people because nations are a gathering together like a hill is and aim for clouds, like mountains do and conversely idolater nations ("high places" = pride = idolatry). Mountains also can mean spiritual heights depending on context. But there's probably a lot of praise going on in nature that we can't see and hear. I sometimes do think that.
Matthew 3:10
2 Chronicles 18:16
Isaiah 2:2
Jeremiah 3:23