Genesis 23:7

And Abraham stood up
For, having made his speech to the children of Heth, he sat down waiting for an answer; or rather perhaps they obliged him to sit down, out of reverence to so great a personage; and when they had done speaking, he rose up: and bowed himself to the people of the land;
the principal of them, in token of the grateful sense he had of the honour they had done him, and of the great civility with which they had used him: [even] to the children of Heth;
this seems to be added to distinguish them from the common people, and as an explanation of the preceding clause; (See Gill on Genesis 23:3).