If you were writing this epistle, take out the name Paul, and insert your name and then, whatever it is that you are: Jim, a service station attendant by the will of God. John, a foundry worker by the will of God. You see, not all are called to be apostles. Not all are called to be pastors, and not all are called to be preachers. Also, it is a mistake to try to be something that God hasn't called you to be, something that God hasn't equipped you for.