Romans 4:11

Context
4:11 And he received the sign of circumcision as a seal of the righteousness that he had by faith while he was still uncircumcised, ¹  so that he would become ²  the father of all those who believe but have never been circumcised, ³  that they too could have righteousness credited to them.

Romans 4:16

Context
4:16 For this reason it is by faith so that it may be by grace, ⁴  with the result that the promise may be certain to all the descendants – not only to those who are under the law, but also to those who have the faith of Abraham, ⁵  who is the father of us all