"and he received the sign of circumcision, a seal of the righteousness of the faith which he had while uncircumcised, so that he might be the father of all who believe without being circumcised, that righteousness might be credited to them," (NASB)

 

"And he received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:" (KJV)

 

"Circumcision was a sign that Abraham already had faith and that God had already accepted him and declared him to be righteous—even before he was circumcised. So Abraham is the spiritual father of those who have faith but have not been circumcised. They are counted as righteous because of their faith." (NLT)

 

"And he received the sign of circumcision as a seal of the righteousness that he had by faith while he was still uncircumcised, so that he would become the father of all those who believe but have never been circumcised, that they too could have righteousness credited to them." (NET)

Nevertheless, the firm foundation of God stands, having this seal, "The Lord knows those who are His," and, "Everyone who names the name of the Lord is to abstain from wickedness." (2 Timothy 2:19 NASB)

 

If to others I am not an apostle, at least I am to you; for you are the seal of my apostleship in the Lord. (1 Corinthians 9:2 NASB)

 

I saw in the right hand of Him who sat on the throne a book written inside and on the back, sealed up with seven seals. (Revelation 5:1 NASB)

 

And I saw another angel ascending from the rising of the sun, having the seal of the living God; and he cried out with a loud voice to the four angels to whom it was granted to harm the earth and the sea, (Revelation 7:2 NASB)