The advantages to the Christian Church in setting before it distinct points of attainment, are very nearly the same in result as the advantages of preaching immediate regeneration in preference to indefinite exhortation to men to lead sober, righteous, and godly lives. It has been found, in the course of New England preaching, that pressing men to an immediate and definite point of conversion, produced immediate and definite results; and so it has been found among Christians, that pressing them to an immediate and definite point of attainment will, in like manner, result in marked and decided progress. For this reason it is, that, among the Moravian Christians, where the experience by them denominated full assurance of faith was much insisted on, there were more instances of high religious faith than in almost any other denomination.
Here is sound philosophy, founded on facts corroborated by Mr. Wesley in his wide range of observation: — "Wherever the work of sanctification increased, the whole work of God increased in all its branches." In 1765 he found in Bristol fifty less members that he left before. He thus accounts for this decline: — "One reason is, that Christian perfection has been little insisted on; and wherever this is not done, be the preacher ever so eloquent, there is little increase either in the numbers or grace of the hearers."
When a definite point is presented to the believer as attainable immediately, all the energies of the soul are aroused and concentrated. Prayer is no more at random. There is a target set up to fire at. Faith as an act — a voluntary venture upon the promise — puts forth its highest energies and achieves its greatest victories.
— from Love Enthroned, Chapter 7.