New Revised Standard Version
When the news came to Joab—for Joab had supported Adonijah though he had not supported Absalom—Joab fled to the tent of the LORD and grasped the horns of the altar.

Contemporary English Version
Joab had not helped Absalom try to become king, but he had helped Adonijah. So when Joab learned that Adonijah had been killed, he ran to the sacred tent and grabbed hold of the corners of the altar for protection.

New American Bible
When the news came to Joab, since he had sided with Adonijah, though not with Absalom, he fled to the tent of the LORD and clung to the horns of the altar.

Douay-Rheims Bible
And the news came to Joab, because Joab had turned after Adonias, and had not turned after Solomon: and Joab fled into the tabernacle of the Lord, and took hold on the horn of the altar.

And the news came to Joab, because Joab had turned after Adonias, and had not turned after Solomon: and Joab fled into the tabernacle of the Lord, and took hold on the horn of the altar.

Joab had

1 Kings 1:7 And he conferred with Joab, the son of Sarvia, and with Abiathar, the priest, who furthered Adonias's side.

Deuteronomy 32:35 Revenge is mine, and I will repay them in due time, that their foot may slide: the day of destruction is at hand, and the time makes haste to come.

2 Samuel 18:2,14,15 And sent forth a third part of the people under the hand of Joab, and a third part under the hand of Abisai the son of Sarvia Joab's brother, and a third part under the hand of Ethai, who was of Geth: and the king said to the people: I also will go forth with you. . . .

caught

1 Kings 1:50 And Adonias fearing Solomon, arose and went, and took hold of the horn of the altar.

Exodus 27:2 And there shall be horns at the four corners of the same: and thou shalt cover it with brass.