TSK · Exodus 27:2

With it he made the bases for the door of the tent of meeting, the bronze altar, the bronze grating for it, and all the utensils of the altar,

He must put some of the blood on the horns of the altar which is before the LORD in the Meeting Tent, and all the rest of the blood he must pour out at the base of the altar of burnt offering that is at the entrance of the Meeting Tent.

and he slaughtered it. Moses then took the blood and put it all around on the horns of the altar with his finger and purified the altar, and he poured out the rest of the blood at the base of the altar and so consecrated it to make atonement on it.

As for the censers of these men who sinned at the cost of their lives, they must be made into hammered sheets for covering the altar, because they presented them before the LORD and sanctified them. They will become a sign to the Israelites.”

When the news reached Joab(for Joab had supported Adonijah, although he had not supported Absalom), he ran to the tent of the LORD and grabbed hold of the horns of the altar.

The LORD is God and he has delivered us. Tie the offering with ropes to the horns of the altar!