And David commanded to gather together the sojourners that were in the land of Israel; and he set masons to cut hewn stones to build the house of God.
Read Chapter 22
George Leo Haydock
Proselytes. This is the first time that the word occurs in the Vulgate. See Exodus xii. 45. It means "strangers "(Calmet) who were not allowed to live in the country, unless they would observe the natural law, and renounce idolatry. (Rabbins)
These had embraced the Jewish religion. (Menochius)
They were the remnants of the people of Chanaan, (3 Kings ix. 20,) and were treated as public slaves, which could not have been done, with justice or policy, with regard to those who might barely wish to reside in the country. These strangers prefigured the Gentiles, chosen to build the Christian Church.