Aptitudes as Spiritual Gifts
Certainly some gifts involve distinctive endowment beyond the normal capacities of the recipient (e.g., prophecy and tongues, as we shall see below). But the direction of Paul's teaching is fairly expressed as follows: any capacity of the believer, including aptitudes present before conversion, brought under the controlling power of God's grace and functioning in his service is a spiritual gift. Spiritual gifts comprise all the ways in which God by the power of his Spirit uses Christians as instruments in his service.
1 Corinthians 7:7 is an instructive example of this breadth: celibacy or marriage, as the case may be, ought to be and can be a spiritual ministry. Biblically speaking, "charismatic" and "Christian" are synonymous. The Christian life in its totality is (to bo) a charismatic life. Christ's church as a whole is the charismatic movement.