Ezekiel 43:16

The hearth is square, 21 feet long by 21 feet wide.

Exodus 27:1

“You are to construct the altar of acacia wood. The altar must be square, 7½ feet long, and 7½ feet wide; it must be 4½ feet high.

Exodus 38:1-2

Bezalel constructed the altar of burnt offering from acacia wood. It was square, 7½ feet long and 7½ feet wide, and was 4½ feet high.

2 Chronicles 4:1

He made a bronze altar 30 feet long, 30 feet wide, and 15 feet high.

Ezra 3:3

They set up the altar on its foundation and offered burnt offerings for the morning and evening on it to the Lord even though they feared the surrounding peoples.

Treasury of Scripture Knowledge

Summary

And the altar shall be twelve cubits long, twelve broad, square in the four squares thereof.

Square

Bible References

Twelve cubits

Exodus 27:1
“You are to construct the altar of acacia wood. The altar must be square, 7½ feet long, and 7½ feet wide; it must be 4½ feet high.
2 Chronicles 4:1
He made a bronze altar 30 feet long, 30 feet wide, and 15 feet high.
Ezra 3:3
They set up the altar on its foundation and offered burnt offerings for the morning and evening on it to the Lord even though they feared the surrounding peoples.

Square

Exodus 38:1
Bezalel constructed the altar of burnt offering from acacia wood. It was square, 7½ feet long and 7½ feet wide, and was 4½ feet high.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.