It is difficult to know exactly what the apostle means by ‘word of wisdom’. Let us break it into two.
Some people think that this is not just the gift of revelation, such as an apostle had, to speak the inspired word, but that it refers to the ministry of all times. Certain people are gifted, they say, with wisdom and with knowledge. But that is not the usual view, it is very unlikely that we are supposed to look at ministers today and say, ‘He has the gift of wisdom’, or, ‘He has the gift of knowledge, and he has it more than anybody else.’ Whatever gifts ministers may have, they vary in degree but not in kind from the gifts that ordinary Christian people have. Ministers don’t have some super-spiritual endowment, so that they intrinsically have more understanding and knowledge than others. Preachers have to work at our preparation; they have to pray and seek the correct understanding and correct exegesis of a passage. But every Christian has the right and the same blessing of the Spirit to open God’s word and to understand it for himself, herself, and to check upon the preacher.