| Gill's Exposition of the Entire Bible And she said unto her,.... Having the highest opinion of her piety and prudence, and being confident she would never advise her to what was contrary to true religion and virtue: all that thou sayest unto me I will do; observe every instruction and direction she gave her, and attend strictly to every circumstance pointed out to her, as she did; the word for "unto me" is one of those instances, the Masora observes, is not written but read; the letters of the word are not in the text, only the vowel points, the reason of which cannot well be said; what the Midrash (q) gives can never satisfy. (q) Midrash Ruth, ut supra. (fol. 33. 3.)
Keil and Delitzsch Biblical Commentary on the Old TestamentRuth promised to do this. The אלי, which the Masorites have added to the text as Keri non scriptum, is quite unnecessary. From the account which follows of the carrying out of the advice given to her, we learn that Naomi had instructed Ruth to ask Boaz to marry her as her redeemer (cf. Ruth 3:9).
Geneva Study BibleAnd she said unto her, All that thou sayest unto me I will do.
Matthew Henry's Concise Commentary3:1-5 The married state should be a rest, as much as any thing upon earth can be so, as it ought to fix the affections and form a connexion for life. Therefore it should be engaged in with great seriousness, with earnest prayers for direction, for the blessing of God, and with regard to his precepts. Parents should carefully advise their children in this important concern, that it may be well with them as to their souls. Be it always remembered, That is best for us which is best for our souls. The course Naomi advised appears strange to us; but it was according to the laws and usages of Israel. If the proposed measure had borne the appearance of evil, Naomi would not have advised it. Law and custom gave Ruth, who was now proselyted to the true religion, a legal claim upon Boaz. It was customary for widows to assert this claim, De 25:5-10. But this is not recorded for imitation in other times, and is not to be judged by modern rules. And if there had been any evil in it, Ruth was a woman of too much virtue and too much sense to have listened to it. | 
