Where these verse overlooked in reading Scripture as concerning Paul being an apostle? There are nine (9) verses which say he was an apostle.....
Rom 1:1 Paul, a servant of Jesus Christ, called to be an apostle, separated unto the gospel of God,
1Co 1:1 Paul, called to be an apostle of Jesus Christ through the will of God, and Sosthenes our brother,
2Co 1:1 Paul, an apostle of Jesus Christ by the will of God, and Timothy our brother, unto the church of God which is at Corinth, with all the saints which are in all Achaia:
Gal 1:1 Paul, an apostle, (not of men, neither by man, but by Jesus Christ, and God the Father, who raised him from the dead; )
Eph 1:1 Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus:
Col 1:1 Paul, an apostle of Jesus Christ by the will of God, and Timotheus our brother,
1Ti 1:1 Paul, an apostle of Jesus Christ by the commandment of God our Saviour, and Lord Jesus Christ, which is our hope;
2Ti 1:1 Paul, an apostle of Jesus Christ by the will of God, according to the promise of life which is in Christ Jesus,
Tit 1:1 Paul, a servant of God, and an apostle of Jesus Christ, according to the faith of God's elect, and the acknowledging of the truth which is after godliness;