What does Genesis 23:7 mean?

In response to Abraham's request for property in Hebron to use as a permanent burying place for his people, the Hittites had graciously acknowledged Abraham's status among them and offered to share their own tombs with him. Abraham, however, intends to secure a permanent piece of property as his own.

In response to their answer, Abraham stands and bows before the Hittites in a sign of great respect. Throughout the negotiation that will follow, both Abraham and the Hittites will remain very respectful to each other. While politeness was an extremely important part of that culture, this exchange is particularly warm. Abraham seems to be going out of his way to be cordial with the Hittites, and they clearly respect him enough to return that respect.