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Folks such as my self believe this is a reference to the Trinity (Father, Son and Holy Spirit always in agreement). Myself, I would call it as the Holy Trinity agreeing (as always) to disrupt the languages. I can only speak for myself, of course.

Interestingly, God said he would go down to (regarding Sodom and Gomorrah).

3 men appeared outside the tent of Abraham.

Two of the men went on to Sodom - later we find out they were two angels.

The passage opens:

“Now the Lord appeared to him by the oaks of Mamre, while he was sitting at the tent door in the heat of the day. When he lifted up his eyes and looked, behold, three men were standing opposite him; and when he saw them, he ran from the tent door to meet them and bowed himself to the earth,” (Genesis 18:1-2).

So we know right off that the sudden appearance of these men represents the Lord appearing to Abraham. Most of the rest of the passage is Abraham talking with the Lord as he dines in his home with the men and then walks with them as they head on toward Sodom. The passage goes on to state:

“Then the men turned away from there and went toward Sodom, while Abraham was still standing before the Lord,” (Genesis 18:22)

It may be tempting to read this as saying that all three men left and that the LORD was still there speaking with Abraham independent of the men. The rest of the passage, however, shows us that two of the men went on while one remained speaking with Abraham. The one who remained was the LORD, while the other two were angels. After conversing with Abraham further about the coming judgment of the cities below, the passage concludes by telling us that:

“As soon as He had finished speaking to Abraham the Lord departed, and Abraham returned to his place. Now the two angels came to Sodom in the evening as Lot was sitting in the gate of Sodom. When Lot saw them, he rose to meet them and bowed down with his face to the ground,” (Genesis 18:33-19:1)

The LORD departs, Abraham goes home, and the two angels arrive at Sodom. That accounts for all three men who were walking with Abraham. And note that the passage doesn’t just say that two angels arrive in Sodom, but rather that the two angels arrive. These are the two angels that the story has already introduced. The two angels who were walking with Abraham and God. So the three men who appeared to Abraham were God and the two angels who were then sent on to Sodom before judgment came to that city.

https://carm.org/who-were-the-three-men-who-appeared-to-abraham-in-genesis-18