Charles H. Spurgeon on Psalms 18:23

"I was upright before him." Hence observe: —first, that a godly man may have his heart upright and perfect even in the imperfection of his ways. Secondly, a man that is sincere is in God's account a perfect man: sincerity is the truth of all grace, the highest pitch that is to be attained here. Thirdly, sincerity of heart gives a man boldness even in the presence of God, notwithstanding many failings. The Lord doth "charge his angels with folly," how much more man that "dwells in a house of clay"? Job 4. David, whose faith failed, and who had said, "I shall one day perish by the hand of Saul," and whose tongue had faltered also to Abimelech, the priest; three or four several lies he had told; yet David can say to God, that he was perfect with him for all that. It is a strange boldness that the saints have in the presence of God by virtue of the new covenant. All their sins shall be laid open at the last day as a cancelled bond, that they wonder how they shall look upon them and not blush; but the same spirit of sonship that shall give them perfect boldness then, doth give them boldness in a great measure even now in this life; that they shall be able to say, "Neither height not depth," etc., nothing "shall separate us from the love of Christ." —William Strong.