Charles H. Spurgeon on Psalms 119:73

Give me understanding. Let us pray unto God that he would open our understandings, that as he hath given us consciences to guide us, so also he would give eyes to these guides that they may be able to direct us aright. The truth is, it is God only that can soundly enlighten our consciences; and therefore let us pray unto him to do it. All our studying, and hearing, and reading, and conferring will never be able to do it; it is only in the power of him who made us to do it. He who made our consciences, he only can give them this heavenly light of true knowledge and right understanding; and therefore let us seek earnestly to him for it. William Fenner, 1600-1640.