Cube in a dream

Biblical meaning from Hearing God's Voice in Dreams by Apostle Nicholas V. Mbanjwa

Also: Square block, Hexahedron, Perfect cube

What it means

Divine perfection, complete holiness, and the absolute presence of God. Because a cube has perfectly equal length, width and height, it serves as a geometric symbol of ultimate balance, stability and unchanging truth.

The Holy of Holies: the innermost chamber of the tabernacle and of Solomon's temple was a perfect cube, twenty cubits long, wide and high. It represents the secret place, God's presence and God's sovereignty.

The New Jerusalem is likewise measured with its length, breadth and height equal.

✦ When it is positive

God's ultimate nature
His presence
Ultimate power
Divine being
Stability and unchanging truth

⚠ When it is a warning

A cube treated as an object of power in itself

How to tell the difference

PROPHETICALLY IN RELATION TO MAN, the cube represents the three spatial dimensions — length, height and width — and so what affects the material world, what is temporal, the material realm. Establish whether the dream concerns God's presence or man's temporal realm.

Scripture

Within the inner sanctuary was twenty cubits in length, and twenty cubits in width, and twenty cubits in its height. He overlaid it with pure gold. He covered the altar with cedar.
1 Kings 6:20 (WEB)

The city is square. Its length is as great as its width. He measured the city with the reed: twelve thousand twelve stadia. Its length, width, and height are equal.
Revelation 21:16 (WEB)