Do not work for the food that perishes but for the food that endures for eternal life, which the Son of Man will give you. For it is on him that God the Father has set his seal.”
He received the sign of circumcision as a seal of the righteousness that he had by faith while he was still uncircumcised. The purpose was to make him the ancestor of all who believe without being circumcised and who thus have righteousness reckoned to them,
In him you also, when you had heard the word of truth, the gospel of your salvation, and had believed in him, were marked with the seal of the promised Holy Spirit;
But God’s firm foundation stands, bearing this inscription: “The Lord knows those who are his,” and, “Let everyone who calls on the name of the Lord turn away from wickedness.”
In the same way, when God desired to show even more clearly to the heirs of the promise the unchangeable character of his purpose, he guaranteed it by an oath,