Sirach did not want a long mourning period because grief could lead to the death of the person grieving. A sad heart can sap your strength. When the person was buried, the period of sorrow should end despite the fact that your heart is still heavy. Drive away sorrow and grief. Remember you own life. There is no coming back from the grave. You can’t do anything for the dead. You may injure yourself. Your fate will be the same as his. He was here yesterday and gone today. Your fate may be the same, here today and gone tomorrow. When the dead are at rest, let their remembrance die with them. Their spirit has departed, since we have the Greek idea of body and spirit.
This psalm ends with the righteous flourishing. The upstanding people flourish like palm trees or like the cedars in Lebanon. They are planted in the house of Yahweh. They flourish in God’s courtyards. Even in old age, they still produce fruit as they are green and full of sap. The growth of all these plants and trees shows the uprightness of Yahweh since there is no unrighteousness in him. Thus the faithful ones are like giant growing trees.