Moses
Exodus 32:13ESV·traditional attribution

Remember Abraham, Isaac, and Israel, your servants, to whom you swore by your own self, and said to them, ‘I will multiply your offspring as the stars of heaven, and all this land that I have promised I will give to your offspring, and they shall inherit it forever.’”

John Calvin Reformed @genevareformer

13. Remember Abraham, Isaac, and Israel, thy servants He does not bring thern forward as patrons, by the assistance of whose voice he might obtain what He seeks; but because the promise was lodged with them, which they transmitted as an inheritance to their descendants. We must observe, then, the quality or character with which God had invested the Patriarchs.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. God acquaints Moses with what was doing in the camp while he was absent, Exo 32:7, Exo 32:8. He could have told him sooner, as soon as the first step was taken towards it, and have hastened him down to prevent it; but he suffered it to come to this height, for wise and holy ends, and then sent him down to punish it.

Commenting on Exodus 32:7-14

John Gill Reformed Baptist @doctorgill

Remember Abraham, Isaac, and Israel, thy servants,.... The covenant he made with them, the promise he had made unto them, with an oath annexed to it: to whom thou swarest by thine own self; which he did, because he could swear by no greater; and for the confirmation of his covenant and promise, see Gen 22:16.