Jamieson, Fausset and Brown on Ruth 1:12-13

12-13. Turn again, my daughters, go your way--That Naomi should dissuade her daughters-in-law so strongly from accompanying her to the land of Israel may appear strange. But it was the wisest and most prudent course for her to adopt: first, because they might be influenced by hopes which could not be realized; second, because they might be led, under temporary excitement, to take a step they might afterwards regret; and, third, because the sincerity and strength of their conversion to the true religion, which she had taught them, would be thoroughly tested.