1 Timothy 4:15

15. Wholly to them All other business was to be laid aside, and the whole man to be surrendered to, and kept within, the sacred work, of public reading, exhorting, teaching, and governing the Church. Many men have, as in the “local ministry” of Methodism, maintained a secular business and yet preached, with great success and without remuneration, the holy gospel. Yet others there are, the great body, indeed, of the ministry, who are called to give themselves wholly to the work. The “priesthood of the people” does not so far extend but that there is a divinely established line drawn in the New Testament between ministry and laity.

Thy profiting Thy improved ability from practice.