In other words, whether we like it or not, we cannot avoid doctrine… the New Testament everywhere is full of doctrine. So to refuse to consider doctrine is not only to refuse to believe in the Bible as the Word of God, it is insulting to God Himself. If God has chosen to use such terms as righteousness, justification, sanctification, redemption, atonement, reconciliation, propitiation, then it is our duty to face those terms and to consider their meaning; it is dishonouring to God not to do so. … ‘It is no use your saying, “We are not interested in doctrine; we are concerned about life"; if your doctrine is wrong, your life will be wrong.’ …
That is the danger on the one hand, but there is also a danger at the other extreme which is equally important, and that is the danger which confronts those who have a very great interest in doctrine. So let me try to paint this type of person as clearly as I have painted the other. There are people who are very concerned about doctrine and theology, but their interest seems to be purely detached, purely theoretical and intellectual. There is nothing they delight in more than arguing about theology; yet they do so the whole time as if they were arguing about some abstract science, something far removed from life, something quite apart from practical living.
… we must strenuously avoid the tendency to come to Scripture merely in search of texts to prove our own particular theories and ideas. Doctrine must never be considered in and of itself. Scripture must never be divorced from life.
Let us hold on to doctrine, but let us beware of the terrible danger of a mere theoretical position divorced from life.
David Martyn Lloyd-Jones, Life in Christ: Studies in 1 John (Crossway, 2002), pp. 162-64, 170