Tertullian

Assuredly also, when (the apostle) rules that marriage should be "only in the Lord," that no Christian should intermarry with a heathen, he maintains a law of the Creator, who everywhere prohibits marriage with strangers. But when he says, "although there be that are called gods, whether in l heaven or in earth," the meaning of his words is clear-not as if there were gods in reality, but as if there were some who are called gods, without being truly so.

If, owing to the fault of human error, the word God has become a common name (since in the world there are said and believed to be "gods many" ), yet "the blessed God," (who is "the Father) of our Lord Jesus Christ," will be understood to be no other God than the Creator, who both blessed all things (that He had made), as you find in Genesis, and is Himself "blessed by all things," as Daniel tells us.