Nehemiah 8:15

They were to give an order, and make it public in all their towns and in Jerusalem, saying: Go out to the mountain and get olive branches and branches of field olives (oil trees) and of myrtle, and palm branches and branches of thick trees, to make tents, as it says in the book.

Leviticus 23:4

The following are Jehovah's appointed festivals with holy assemblies. You must announce these at their appointed times.

Leviticus 23:40

Take the best fruits, palm branches, the branches of leafy trees and poplars on the first day, and celebrate in the presence of Jehovah your God for seven days.

Deuteronomy 16:16

Three times a year all your men must come into the presence of Jehovah your God at the place he will choose. At the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Booths. But no one may come into the presence of Jehovah without an offering.

Genesis 8:11

When the dove returned to him in the evening, there in its beak was a freshly plucked olive leaf! Then Noah knew that the water had receded from the earth.

Judges 9:48-49

He traveled up to Mount Zalmon with his men. He took an ax, cut a limb off a tree, and put it on his shoulder. He told his men to hurry and do the same thing.

Matthew 21:1

They were near Jerusalem at Bethphage. Jesus sent two disciples to the Mount of Olives.

John 12:13

They took palm branches and met him. They cried out, Hosanna: Blessed is he who comes in the name of Jehovah, even the King of Israel! (Psalm 118:26)

Revelation 7:9

After this I saw a great crowd that no man could number. It was from all nations, and tribes, and people, and tongues. It stood before the throne, and before the Lamb, clothed with white robes. They had palm branches in their hands.

Treasury of Scripture Knowledge

Summary

And that they should publish and proclaim in all their cities, and in Jerusalem, saying, Go forth unto the mount, and fetch olive branches, and pine branches, and myrtle branches, and palm branches, and branches of thick trees, to make booths, as it is written.

And that

In jerusalem

Olive

General references

Bible References

And that

Leviticus 23:4
The following are Jehovah's appointed festivals with holy assemblies. You must announce these at their appointed times.

In jerusalem

Deuteronomy 16:16
Three times a year all your men must come into the presence of Jehovah your God at the place he will choose. At the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Booths. But no one may come into the presence of Jehovah without an offering.

The mount

Judges 9:48
He traveled up to Mount Zalmon with his men. He took an ax, cut a limb off a tree, and put it on his shoulder. He told his men to hurry and do the same thing.
Matthew 21:1
They were near Jerusalem at Bethphage. Jesus sent two disciples to the Mount of Olives.

Fetch

Leviticus 23:40
Take the best fruits, palm branches, the branches of leafy trees and poplars on the first day, and celebrate in the presence of Jehovah your God for seven days.

Olive

Genesis 8:11
When the dove returned to him in the evening, there in its beak was a freshly plucked olive leaf! Then Noah knew that the water had receded from the earth.

Palm

John 12:13
They took palm branches and met him. They cried out, Hosanna: Blessed is he who comes in the name of Jehovah, even the King of Israel! (Psalm 118:26)
Revelation 7:9
After this I saw a great crowd that no man could number. It was from all nations, and tribes, and people, and tongues. It stood before the throne, and before the Lamb, clothed with white robes. They had palm branches in their hands.

General references

Leviticus 23:42
Live in booths for seven days. Everyone born in Israel must live in booths.
John 7:2
It was time for the Jewish Feast of Tabernacles.