John Calvin Commentary Deuteronomy 4:7

"For what great nation is there, that hath a god so nigh unto them, as Jehovah our God is whensoever we call upon him?" — Deuteronomy 4:7 (ASV)

For what nation is there so great? Moses now repeats in his own name what he had previously presented as spoken by others, as if to show by additional reasons that there was good cause for the Jews to be celebrated throughout the whole world, because it would become evident that no one was their equal.

He mentions two points: first, God would be ready to provide them help whenever they called upon Him; and secondly, He had instructed them in perfect righteousness, beyond which nothing more could be desired.

For when he says that God is nigh unto them, I understand this to refer to the presence of His power, which had been abundantly demonstrated by many miracles. He rightly denies that the Gentiles had ever experienced such help from their gods, since their prayers and cries were offered to deaf and dead idols.