2 Samuel 3:31

And David said to Joab, and to all the people that were with him, Rend your clothes, and gird you with sackcloth, and mourn before Abner. And king David himself followed the bier.

Rend your clothes, and gird you with sackcloth - an outer garment of coarse haircloth, worn by mourners. It was commonly nothing more than a large square piece of cloth wrapped round the person, and fastened at the waist by a girdle. David's sorrow was sincere and profound; and he took occasion to give it public expression by the funeral honours he appointed for Abner.

King David himself followed the bier - a sort of wooden frame, partly resembling a coffin and partly a hand-barrow.