And I will establish my covenant between me and thee and thy seed after thee in their generations for an everlasting covenant, to be a God unto thee, and to thy seed after thee. (17:7)

And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, [and] with his seed after him. (17:19)

And said, By myself have I sworn, saith the Lord, for because thou hast done this thing, and hast not withheld thy son, thine only [son]: (22:16)

That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which [is] upon the sea shore; and thy seed shall possess the gate of his enemies; (22:17)

--Luke--

As he spake to our fathers, to Abraham, and to his seed for ever. (1:55)

To perform the mercy [promised] to our fathers, and to remember his holy covenant; (1:72)

The oath which he sware to our father Abraham, (1:73)

That he would grant unto us, that we being delivered out of the hand of our enemies might serve him without fear, (1:74)