And if God should give a great measure of holiness at first, to any now, as possibly he may, yet their measure of gifts is never great at first, unless they had acquired or received them before conversion. If grace find a man of great parts and understanding, which by study and other helps he had attained before, no wonder if that man, when his parts are sanctified, be able in knowledge the first day; for he had it before, though he had not a heart to use it. But if grace find a man ignorant, unlearned, and of mean abilities, he must not expect to be suddenly lifted up to great understanding and high degrees of knowledge by grace. For this knowledge is not given, now, by sudden infusion, as gifts were, extraordinarily, in the primitive church. You need no other proof of this but experience, to stop the mouth of any gainsayer. Look about you, and observe whether those that are men of knowledge, did obtain it by infusion, in a moment? or whether they did not obtain it by diligent study, by slow degrees? though I know God blesseth some men's studies more than others. Name one man that ever was brought to great understanding, but by means and labour, and slow degrees; or that knoweth any truth, in nature, or divinity, but what he read, or heard, or studied for, as the result of what he read or heard. The person that is proudest of his knowledge, must confess that he came to it in this way himself. [Sidenote: How the Spirit doth illuminate.] But you will ask, What then is the illumination of the Spirit, and enlightening the mind, which the Scripture ascribeth to the Holy Ghost? Hath not our understanding need of the Spirit for light, as well as the heart or will for life?