Albert Barnes Commentary Ruth 1:20

"And she said unto them, Call me not Naomi, call me Mara; for the Almighty hath dealt very bitterly with me." — Ruth 1:20 (ASV)

See the margin. Similar allusions to the meaning of names are seen in Genesis 27:36; Jeremiah 20:3.

The Almighty - שׁדי shadday (see the Genesis 17:1 note). The name “Almighty” is almost unique to the Pentateuch and to the Book of Job. It occurs twice in the Psalms, and four times in the Prophets.