It is tradition. Here is scripture discussing tradition.
Paul illustrated what tradition is: “For I delivered to you as of first importance what I also received, that Christ died for our sins in accordance with the scriptures. . . . Whether then it was I or they, so we preach and so you believed” (1 Cor. 15:3,11). The apostle praised those who followed Tradition: “I commend you because you remember me in everything and maintain the traditions even as I have delivered them to you” (1 Cor. 11:2).
“It is tradition. Here is scripture discussing tradition.”
I honor Paul’s tradition, which he delivered to us in his epistles. Where does it say it is the Roman tradition, that teaches that Paul was all wrong about salvation by grace, and that we needed the Roman Church, 400 to 500 years after the fact, to set us straight?