## multiply your descendants ##

“will cause your descendants to increase greatly” or “will cause your descendants to be very many”

## for my servant Abraham's sake ##

"for my servant Abraham" or "because I promised my servant Abraham that I would do this." (See: [[rc://en/ta/man/translate/figs-explicit]])

## Isaac built an altar there ##

Why Isaac built an altar can be made explicit: "Isaac built an altar there to sacrifice to Yahweh."

## called on the name of Yahweh ##

"prayed in the  name of Yahweh" or "worshiped Yahweh." See how you translated this in [Genesis 12:8](../12/08.md).