because to be qualified according to the qualifications given in scriptures A bishop/pastor is not to be given to wine , to not take part of it, they need a clear mind at all times to watch the flock would you want some one drinking wine to watch your flock) . I just gave you the verses do you only read the parts you want to, or only see the parts your eyes will allow you to see. here I will make it a little bigger for you, maybe you can see from scriptures , this is not me saying this but rather quoting from scripture with in the Holy Word of God.
1ti 3:2A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;1ti 3:3Not given to wine, no striker, not greedy of filthy lucre; but patient, not a brawler, not covetous;
and it not off subject a deacon can have wine a pastor is not supposed to have wine, it is a commandment of God that one can drink wine one can not, to some drinking wine is a sin, if this is so then the Word of God just told the deacons to sin????? NOT!!!!!!!! if a pastor then drinks wine they break the commandment of God/transgress the law/sin.