You are the sons of the prophets and of the covenant that God made with your ancestors, ¹  saying to Abraham, ‘And in your descendants ²  all the nations ³  of the earth will be blessed.’ ⁴ 

Then God ¹  gave Abraham ²  the covenant ³  of circumcision, and so he became the father of Isaac and circumcised him when he was eight days old, ⁴  and Isaac became the father of ⁵  Jacob, and Jacob of the twelve patriarchs. ⁶