Matthew Poole and continuators on John 11:19

19 And many of the Jews came to Martha, and Mary, to comfort them concerning their brother .

Not to pray with them for the Soul of their Brother departed. That departed Souls are in a capacity to be advantaged by the prayers of their Friends, or any such thing, are corruptions of latter times; but they had a civil usage of mourning for their Friends, the time for which was anciently thirty days; they mourned for Iacob forty days, Gen. 50.3. For Aaron thirty days, Numb 20.29. So for Moses, Deut. 34.8. It is probable, the days were fewer for persons of an inferior Quality, but they had some days for all; during which days, their Neighbours and Friends came to visit them, and relieve them in their sorrow, with such Arguments as they had.