From the introduction to 18 Words: The Most Important Words You Will Ever Know by J. I. Packer:
On the one hand, the God-given organism of Scripture … has a centre, what Calvin called a scopus — that is, a focal point set in view, a target aimed at a reference point for everything. That scopus is the Lord Jesus Christ himself, whom the prophets proclaim as the Messiah who should come and the apostles as the Messiah who has come and is coming again. The Spirit leads us to focus on Him and on our need of Him. We find Scripture acting both as the mirror in which we see ourselves as guilty, vile and helpless sinners who need saving, and also as the searchlight which shows us the living Saviour — the Christ who is there, and there for us; or, better, the Christ who is here, and her for me. The Spirit puts us out of doubt as to Jesus’ reality and brings us to know and trust Him as our own Deliverer from sin, from self and from the dark and painful emptiness here and hereafter for which hell — Gehenna, the burning place — is the apt name. (Scripture calls this trustful knowledge faith.) Thus we prove for ourselves the truth of Paul’s statement that ‘the sacred writings … are able to instruct you for salvation through faith in Christ Jesus’ (2 Tim. 3:15). …
But there is another side, too. With Christ at its centre, the Bible is like a huge circle embracing the whole of every man’s life. Those who in C. S. Lewis’s figure, look along the Bible, as along the ray of a flashlight in the attic, find that all they are is weighed and judged by the light of the teaching, narratives and states of affairs that the Bible sets before us. The Spirit of God leads us to make the judgment on our lives that He himself makes. He leads us to measure ourselves by what Scripture shows us of right and wrong ways of being a parent, a child, a politician or citizen, a spouse, a single or bereaved person, a homemaker, a manager, a workman or employee, a neighbour, a teacher or student, an invalid, a rich man or whatever, and also by what we learn from scriptural precepts and examples (Christ, Abraham, Paul, Elijah, all the heroes of the faith) of what true godliness involves. Regularly, when we thus weigh ourselves, we find ourselves wanting; and then the Spirit leads us to change our ways in accordance with that self-measurement. (Scripture calls this clear-sighted change repentance.) Thus we prove for ourselves the truth of Paul’s further statement that all Scripture, being God-breathed, is ‘profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work’ (2 Tim. 3:16f) This is the second thing that it means to be taught by God.
This book contains 18 of what Packer calls “sketches of biblical themes.” I’d call them 18 essays on keywords of the Bible. It was first published thirty years ago, but I hadn’t heard of it. I’ve just started reading, but so far I’m thinking it is a gem.