[Obedience to God’s will would], they say, be a burden too heavy for Christians! As if we could think of anything more difficult than to love God with all our heart, all our soul, and all our strength! Compared with this law, everything ought to be considered easy—whether the requirement to love our enemy or to banish all desire for revenge from our hearts. All these are indeed hard and difficult for our feebleness, even to the least detail of the law [cf. Matt. 5:18; Luke 16:17]. It is the Lord in whom we act virtuously. … To be Christians under the law of grace does not mean to wander unbridled outside the law, but to be engrafted in Christ, by whose grace we are free of the curse of the law, and by whose Spirit we have the law engraved upon our hearts [Jer. 31:33].
The Son of God is “the true Light, which lights every man that cometh into the world.” Therefore whoever does not acknowledge Christ and believe in Him, and does not make Him his own, is and remains a child of wrath (Eph. 2:3) and of damnation, no matter what he is called or what he is. But if man is to find mercy, Christ alone must be the means. He alone makes us paupers rich with His superabundance, expunges our sins with His righteousness, devours our death with His life, and transforms us from children of wrath, tainted with sin, hypocrisy, lies, and deceit, into children of grace and truth. Whoever does not possess this Man possesses nothing.
“Sermons on the Gospel of St. John: Chapters 1-4” in Works, 22:130–131.
All that repent are justified through faith by Christ, and not by works. Paul … concludeth that every man must be justified without deservings, without works, and without help of the law; but alone by Christ.
“A Prologue upon the Epistle of St Paul to the Galatians” in The Works of William Tyndale, 1:513.