פּירוש אויף רות 1:20

"Call me Mara, for the Almighty has made my life very bitter. The pleasantness of bitterness is the reversal of bitterness, just as sweetness transforms, for pleasantness can be said about sweetness, as it is stated (Proverbs 9:17): 'Stolen waters are sweet, and bread eaten in secret is pleasant.'"

"Call me not Naomi, call me Mara." Even though it is written with an 'aleph', it comes as in the way of the 'heh' that disappears at the end of an 'aleph'. 'Mara' instead of 'ha'. Similar to 'as a young calf' according to Rabbi Judah's opinion. In my view, 'Naomi' means something delightful, and 'Mara' is the opposite of delight, and the delightful thing is the sweet food.