2 Samuel 7:12 - Joseph Benson’s Commentary on the Old and New Testaments

And when thy days are fulfilled, &c. When the time of thy life shall expire. This phrase implies, that his days should be prolonged to the usual course of nature, and not cut off in the midst, by any violent or untimely death. Thy seed, which shall proceed out of thy bowels This manner of speaking shows that it was intended to be understood of one who was not yet born, namely, Solomon; and that Absalom, Adonijah, and the rest who pretended to the kingdom, were not designed for it, having already proceeded from him. I will establish his kingdom Solomon reigned a long time himself, and his posterity after him, and the Messiah, his seed, will reign for ever. So the following words may be understood, part of Solomon, part of his posterity in general, and part of Christ only, according to the different nature of the several passages.