"[Scripture], by which, “as in a glass, we may survey ourselves, and know what manner of persons we are,” (James 1. 23) discovers ourselves to us; pierces into the inmost recesses of the mind; strips off every disguise; lays open the inward part; makes a strict scrutiny into the very soul and spirit; and critically judges of the thoughts and intents of the heart. (Heb. iv. 12) It shows us with what exactness and care we are to search and try our spirits, examine ourselves, and watch our ways, and keep our hearts, in order to acquire this important self-science; which it often calls us to do. “Examine yourselves; prove your own selves; know you not yourselves? Let a man examine himself.” (1 Cor. xi. 28) Our Saviour upbraids his disciples with their self-ignorance, in not “knowing what manner of spirits they were of.” (Luke ix. 55) And, saith the apostle, “If a man (through self-ignorance) thinketh himself to be something, when he is nothing, he deceiveth himself. But let every man prove his work, and then shall he have rejoicing in himself, and not another.” (Gal. vi. 3, 4) Here we are commanded, instead of judging others, to judge ourselves; and to avoid the .inexcusable rashness of condemning others for the very crimes we ourselves are guilty of, (Rom. ii. 1, 21, 22) which a self-ignorant man is very apt to do; nay, to be more offended at a small blemish in another's character, than at a greater in his own; which folly, self-ignorance, and hypocrisy, our Saviour, with just severity, animadverts upon. (Mat. vii. 3-5) And what stress was laid upon this under the Old Testament dispensation appears sufficiently from those expressions. "Keep thy heart with all diligence." (Prov. iv. 23) "Commune with your own heart." (Psal. iv. 4) "Search me, O God, and know my heart; try me, and know my thoughts." (Psal. cxxxix. 23) "Examine me, O Lord, and prove me; try my reins and my heart." (Psal. xxvi. 2) "Let us search and try our ways." (Lam. iii. 4) "Recollect, recollect yourselves, O "nation not desired." (Zeph. ii. 1)"