workers...: that is, masons and carpenters

Geneva Study Bible

Moreover there are workmen with thee in abundance, hewers and workers of stone and timber, and all manner of cunning men for every manner of work.1 Chronicles 22:15 Parallel Commentaries

The Promise in 2 Samuel, Chap. vii.
The Messianic prophecy, as we have seen, began at a time long anterior to that of David. Even in Genesis, we perceived [Pg 131] it, increasing more and more in distinctness. There is at first only the general promise that the seed of the woman should obtain the victory over the kingdom of the evil one;--then, that the salvation should come through the descendants of Shem;--then, from among them Abraham is marked out,--of his sons, Isaac,--from among his sons, Jacob,--and from among the twelve sons …
Ernst Wilhelm Hengstenberg—Christology of the Old Testament

Chronicles
The comparative indifference with which Chronicles is regarded in modern times by all but professional scholars seems to have been shared by the ancient Jewish church. Though written by the same hand as wrote Ezra-Nehemiah, and forming, together with these books, a continuous history of Judah, it is placed after them in the Hebrew Bible, of which it forms the concluding book; and this no doubt points to the fact that it attained canonical distinction later than they. Nor is this unnatural. The book …
John Edgar McFadyen—Introduction to the Old Testament