John Calvin Commentary Genesis 2:1

"And the heavens and the earth were finished, and all the host of them." — Genesis 2:1 (ASV)

Thus the heavens and the earth were finished. Moses summarily repeats that in six days the fabric of the heaven and the earth was completed. The general division of the world is made into these two parts, as has been stated at the beginning of the first chapter. But he now adds, all the host of them, by which he indicates that the world was supplied with all its adornment.

This epilogue, moreover, with sufficient clarity entirely refutes the error of those who imagine that the world was formed in a moment; for it declares that an end was only finally put to the work on the sixth day. Instead of host, we could appropriately render the term abundance; for Moses declares that this world was completed in every respect, as if the whole house were well supplied and filled with its furniture.

The heavens without the sun, and moon, and stars, would be an empty and dismantled palace: if the earth were lacking animals, trees, and plants, that barren waste would appear as a poor and deserted house. God, therefore, did not cease from the work of the creation of the world until he had completed it in every part, so that nothing would be lacking for its suitable abundance.