You will give the truth to Jacob, mercy to Abraham, which you swore to our fathers from the ancient days
Other versions
King James Version
Thou wilt perform the truth to Jacob, and the mercy to Abraham, which thou hast sworn unto our fathers from the days of old.English Standard Version
You will show faithfulness to Jacob and steadfast love to Abraham, as you have sworn to our fathers from the days of old.New International Version
You will be true to Jacob, and show mercy to Abraham, as you pledged on oath to our fathers in days long ago.