Ezekiel 43:15

And the hearth, shall, be four cubits, - and from the hearth and upward, the horns shall be four.

Exodus 27:2

And thou shalt make its horns upon its four corners, of the same, shall be its horns, - and thou shalt overlay it with copper.

Leviticus 9:9

and the sons of Aaron brought the blood unto him, and he dipped his finger in the blood, and put thereof upon the horns of the altar, - and the remainder of the blood, poured he out at the base of the altar;

Psalm 118:27

Yahweh is GOD, and hath shed on us light, - Bind ye the festal sacrifice with cords, Up to the horns of the altar.

1 Kings 2:28

And, the report, came unto Joab, for, Joab, had inclined after Adonijah, although, after Solomon, he had not inclined, - so then Joab fled into the Tent of Yahweh, and laid hold of the horns of the altar.

Isaiah 29:1-2

Alas for Ariel, Ariel, The city against which, David encamped, - Add ye a year to a year. Let the festivals, come round;

Isaiah 29:7

And it shall be like the dream of a night vision, With the multitude of all the nations who have been making war against Ariel, - Even with all who have been making war against her and her stronghold and who have been laying siege to her;

Treasury of Scripture Knowledge

Summary

So the altar shall be four cubits; and from the altar and upward shall be four horns.

The altar

Bible References

The altar

Isaiah 29:1
Alas for Ariel, Ariel, The city against which, David encamped, - Add ye a year to a year. Let the festivals, come round;

Four horns

Exodus 27:2
And thou shalt make its horns upon its four corners, of the same, shall be its horns, - and thou shalt overlay it with copper.
Leviticus 9:9
and the sons of Aaron brought the blood unto him, and he dipped his finger in the blood, and put thereof upon the horns of the altar, - and the remainder of the blood, poured he out at the base of the altar;
1 Kings 2:28
And, the report, came unto Joab, for, Joab, had inclined after Adonijah, although, after Solomon, he had not inclined, - so then Joab fled into the Tent of Yahweh, and laid hold of the horns of the altar.
Psalm 118:27
Yahweh is GOD, and hath shed on us light, - Bind ye the festal sacrifice with cords, Up to the horns of the altar.