What was the first ever marriage?

St. Jacob of Sarug tells us about the first ever marriage that was between our first parents, Adam and Eve in the Garden of Eden (paradise). He says:

“[God] adorned Eve as a virgin bride and gave her to Adam,

and into her dowry He put the sea, the dry land, and the air.

All the worlds gathered for the great marriage feast that He had prepared, the bridal couple were radiant in their crowns and their raiment.

He covered them in magnificent light and in elegant radiance, and He left them among the trees to enjoy their delights.

He gave them every tree and their fruits as a wedding present, and the garden exulted in the bride and bridegroom for they were beloved.

The tree of life was in the great bridal chamber of Eden; it was concealed, to be for that luminous couple when they were perfected.”¹⁷¹¹