Ruth 4:16

"And Naomi took the child and laid it in her bosom, and became nurse unto it."

This does not mean that Naomi adopted the child or that there was anything unusual about this. What comes into view here is the honored place that Naomi had in the household of the wealthy and powerful Boaz. The tradition that Boaz was both a widower and childless is not contradicted by anything found in the Scriptures, and it would have been the most natural thing in the world for Naomi to have moved into the "Big House" as the new infant's full-time nurse.