Then she arose with her daughters-in-law to return from the country of Moab, for she had heard in the fields of Moab that the LORD had visited his people and given them food. So she set out from the place where she was with her two daughters-in-law, and they went on the way to return to the land of Judah. But Naomi said to her two daughters-in-law, “Go, return each of you to her mother's house. May the LORD deal kindly with you, as you have dealt with the dead and with me. The LORD grant that you may find rest, each of you in the house of her husband!” Then she kissed them, and they lifted up their voices and wept. And they said to her, “No, we will return with you to your people.” But Naomi said, “Turn back, my daughters; why will you go with me? Have I yet sons in my womb that they may become your husbands? Turn back, my daughters; go your way, for I am too old to have a husband. If I should say I have hope, even if I should have a husband this night and should bear sons, would you therefore wait till they were grown? Would you therefore refrain from marrying? No, my daughters, for it is exceedingly bitter to me for your sake that the hand of the LORD has gone out against me.” Then they lifted up their voices and wept again. And Orpah kissed her mother-in-law, but Ruth clung to her. Ruth 1:6-14)
Naomi began to think of returning, after the death of her two sons. When death comes into a family, it ought to reform what is amiss there. Earth is made bitter to us, that heaven may be made dear. Naomi seems to have been a person of faith and piety. She dismissed her daughters-in-law with prayer. It is very proper for friends, when they part, to part with them thus part in love.
Did Naomi do well, to discourage her daughters from going with her, when she might save them from the idolatry of Moab, and bring them to the faith and worship of the God of Israel? Naomi, no doubt, desired to do that; but if they went with her, she would not have them to go upon her account.
Those that take upon them a profession of religion only to oblige their friends, or for the sake of company, will be converts of small value. If they did come with her, she would have them make it their deliberate choice, and sit down first and count the cost, as it concerns those to do who make a profession of religion. And more desire “rest in the house of a husband,” or some wordly settlement or earthly satisfaction, than the rest to which Christ invites our souls; therefore when tried they will depart from Christ, though perhaps with some sorrow.
From Matthew Henry's Commentary on the Whole Bible