Moses
Genesis 14:20BSB·traditional attribution

and blessed be God Most High, who has delivered your enemies into your hand.” Then Abram gave Melchizedek a tenth of everything.

John Calvin Reformed @genevareformer

20. And he gave him tithes of all . There are those who understand that the tithes were given to Abram; but the Apostle speaks otherwise, in declaring that Levi had paid tithes in the loins of Abram, (Hebrews 7:9,) when Abram offered tithes to a more excellent Priest.

Matthew Henry Presbyterian @wholebiblehenry

This paragraph begins with the mention of the respect which the king of Sodom paid to Abram at his return from the slaughter of the kings; but, before a particular account is given of this, the story of Melchizedek is briefly related, concerning whom observe, I. Who he was.

Commenting on Genesis 14:17-20

John Gill Reformed Baptist @doctorgill

And blessed be the most high God,.... Let his name be praised, and thanks be given to him for all mercies temporal and spiritual, since all flow from him, and particularly for the mercies Abram and others through him were now made partakers of; for whoever were the instruments, God was the efficient cause, and to him all the glory was to be given: which...