Charles Ellicott Commentary Ruth 2:11

"And Boaz answered and said unto her, It hath fully been showed me, all that thou hast done unto thy mother-in-law since the death of thy husband; and how thou hast left thy father and thy mother, and the land of thy nativity, and art come unto a people that thou knewest not heretofore." — Ruth 2:11 (ASV)

Previously. —The curious Hebrew phrase rendered this way is literally, yesterday and the day before.