What does Genesis 18:2 mean?
Abraham, sitting at the entrance to his tent in the heat of the day, looks up and suddenly notices three men standing nearby. He seems startled to see them. Given who these three men are, it's possible they appeared out of thin air. Or, more simply, they were simply not noticed until they'd gotten fairly close. In any case, Abraham had not noticed them before.This passage indicates that these men are God, in a temporary human form, as well as two angels (Genesis 18:1). This kind of physical appearance of God is referred to as a theophany. It's not clear whether Abraham immediately understood one of these men to be the Lord or simply saw them as strangers. He hurried toward them and bowed low, a sign of great respect, especially coming from a wealthy and important man. Whomever he thought these men to be, Abraham saw it as his responsibility to greet them warmly and offer them hospitality.
Genesis 18:1–8 describes Abraham's initial reaction to three unexpected guests at this tent. These men are actually God, in a temporary human form, and two similarly-formed angels. Abraham rushes to offer an extravagant meal of bread, meat, and cheeses. Whether Abraham is merely expressing common Bedouin hospitality, or knows that he is in the presence of God, his actions are both humble and gracious. In the next passage, the identity of his visitors will become clear.
Abraham hurries to offer respect and hospitality to three men who appear near his tent. Over the course of the chapter, the men reveal themselves to be the Lord and two angels in human form. As He had told Abraham in the previous chapter, the Lord now reveals to Sarah that she will have a son within the year. Later, the Lord poetically says He will investigate the sins of Sodom and Gomorrah, where Abraham's nephew Lot lives. Abraham asks, and the Lord agrees, not to destroy Sodom if God finds 10 righteous people there.