Commentary On Psalms Volume 4 by Jean Calvin
At the time when this psalm was penned, whenever that was, David having attained to the possession of royal power, and aware that he reigned for the common safety of the Church, calls upon all the children of Abraham to ponder attentively this grace. He also recounts his dangers, the magnitude and variety of which would have slain him a hundred times, had not God wonderfully succored him. From this it is obvious that he came to the throne of the kingdom, neither by his own policy, nor by the favor of men, nor by any human means. At the same time, he informs us that he did not rashly or by wicked intrigues rush forward and take forcible possession of the kingdom of Saul, but that he was appointed and established king by God himself. Let us remember that it was the design of the Spirit, under the figure of this temporal kingdom, to describe the eternal and spiritual kingdom of God's Son, even as David represented his person.