Ruth 1:14-18

Verse 14

And Orpah kissed her mother-in-law - The Septuagint add, Και επεστρεψεν εις τον λαον αυτης, And returned to her own people. The Vulgate, Syrian, and Arabic, are to the same purpose.
Verse 15

Gone back - unto her gods - They were probably both idolaters, their having been proselytes is an unfounded conjecture. Chemosh was the grand idol of the Moabites. The conversion of Ruth probably commenced at this time.
Verse 16

And Ruth said - A more perfect surrender was never made of friendly feelings to a friend: I will not leave thee - I will follow thee: I will lodge where thou lodgest - take the same fare with which thou meetest; thy people shall be my people - I most cheerfully abandon my own country, and determine to end my days in thine. I will also henceforth have no god but thy God, and be joined with thee in worship, as I am in affection and consanguinity. I will cleave unto thee even unto death; die where thou diest; and be buried, if possible, in the same grave. This was a most extraordinary attachment, and evidently without any secular motive.

The Targum adds several things to this conversation between Naomi and Ruth. I shall subjoin them: "And Ruth said, Entreat me not to leave thee," for I desire to become a proselyte. And Naomi said, We are commanded to keep the Sabbath and other holy days; and on it not to travel more than two thousand cubits. And Ruth said, "Whither thou goest, I will go." And Naomi said, We are commanded not to lodge with the Gentiles. Ruth answered, "Where thou lodgest, I will lodge." And Naomi said, We are commanded to observe the one hundred and thirteen precepts. Ruth answered, What thy people observe, that will I observe; as if they had been my people of old. And Naomi said, We are commanded not to worship with any strange worship. Ruth answered, "Thy God shall be my God." Naomi said, We have four kinds of capital punishment for criminals; stoning, burning, beheading, and hanging. Ruth answered, "In whatsoever manner thou diest, I will die." Naomi said, We have a house of burial. Ruth answered, "And there will I be buried."

It is very likely that some such conversation as this took place between the elders and those who were becoming proselytes. This verse is famous among those who strive to divine by the Bible. I should relate the particulars, but am afraid they might lead to a continuance of the practice. In my youth I have seen it done, and was then terrified.
Verse 17

The Lord do so to me, and more - May he inflict any of those punishments on me, and any worse punishment, if I part from thee till death. And it appears that she was true to her engagement; for Naomi was nourished in the house of Boaz in her old age, and became the fosterer and nurse of their son Obed, Rut 4:15, Rut 4:16.
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