12 Heb “they.” The verb is 3rd person masculine plural referring to Naomi’s sons, as the translation indicates.
13 Heb “and they lifted up for themselves Moabite wives.” When used with the noun “wife,” the verb נָשָׂא (nasa’, “to lift up, carry, take”) forms the idiom “to take a wife,” that is, to marry ( 673 Qal.3.d; 2 Chr 11:21; 13:21; 24:3; Ezra 9:2, 12; 10:44; Neh 13:25).
14 Heb “the name of the one [was] Orpah and the name of the second [was] Ruth.” The name Orpah (עָרְפָּה, ’orpah) is from the noun עֹרֶף (’oref, “back of the neck”) and the related verb (“to turn one’s back”). The name Ruth (רוּת, rut) is from the noun רְעוּת (ré’ut, “friendship”), derived from the root רֵעַ (rea’, “friend, companion”). Ironically, Orpah will eventually turn her back on Naomi, while Ruth will display extraordinary friendship as her life-long companion (see 1:14). Since they seem to mirror the most definitive action of these women, perhaps they designate character types (as is the case with the name Mara in 1:21 and Peloni Almoni in 4:2) rather than their original birth names.

In other versions

These took Moabite wives; the name of the one was Orpah and the name of the other Ruth. They lived there about ten years,

They married Moabite women, one named Orpah and the other Ruth. After they had lived there about ten years,

Her sons took Moabite women as their wives: one was named Orpah and the second was named Ruth. After they lived in Moab about ten years,

The two sons married Moabite women. One married a woman named Orpah, and the other a woman named Ruth. But about ten years later,

And they took for themselves Moabite wives. The name of the one was Orpah and the name of the other was Ruth. And they lived there about ten years.

And they took them wives of the women of Moab; the name of the one was Orpah, and the name of the other Ruth: and they dwelled there about ten years.

Public Domain