JC Ryle (1816-1900) was the first bishop of Liverpool. He wrote many helpful works such as Holiness, Knots Untied, Light from Old Times, and Practical Religion.
Below is a quote from Practical Religion on Practical Christian Holiness (Banner of Truth), pages 11-12
“It is as certain as anything in the Bible that ‘without holiness no man shall see the Lord’ (Heb. 12:14). It is equally certain that it is the invariable fruit of saving faith, the real test of regeneration, the only sound evidence of indwelling grace, the certain consequence of vital union with Christ. – Holiness is not absolute perfection and freedom from all faults. Nothing of the kind! The wild words of some who talk of enjoying ‘unbroken communion with God’ for many mouths, are greatly to be deprecated, because they raise unscriptural exceptions in the minds of young believers, and so do harm. Absolute perfection is for heaven, and not for earth, where we have a weak body, a wicked world, and a busy devil continually near our souls. Nor is real Christian holiness ever attained, or maintained, without a constant fight and struggle. The great apostle, who said ‘I fight, -I labour, – I keep under my body and bring it into subjection’ (1 Cor. 9:27), would have been amazed to hear of sanctification without personal exertion, and to be told that believers only need to sit still, and everything will be done for them!
Yet, weak and imperfect as the holiness of the best saints may be, it is a real true thing, and has a character about it as unmistakable as light and salt. It is not a thing which begins and ends with noisy profession: it will be seen much more than heard. Genuine scriptural holiness will make a man do his duty at home and by the fireside, and adorn his doctrine in the little trials of daily life. It will exhibit itself in passive graces as well as in active. It will make a man humble, kind, gentle, unselfish, good-tempered, considerate for others, loving, meek, and forgiving. It will not constrain him to go out of the world, and shut himself up in a cave, like a hermit. But it will make him do his duty in that state to which God has called him, on Christian principles, and after the pattern of Christ. Such holiness, I know well, is not common. It is a style of practical Christianity which is painfully rare in these days. but I can find no other standard of holiness in the Word of God, – no other which comes up to the pictures drawn by our Lord and his apostles. In an age like this no reader can wonder if I press this subject also on men’s attention. Once more let us ask, – In the matter of holiness, how is it with our souls? ‘How do we do’?”