The Classics - The Fundamentals & Doctrine of the Word

14 But even if you should suffer for righteousness' sake, you will be blessed. Have no fear of them, nor be troubled, 15 but in your hearts honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you; yet do it with gentleness and respect, 16 having a good conscience, so that, when you are slandered, those who revile your good behavior in Christ may be put to shame. 17 For it is better to suffer for doing good, if that should be God's will, than for doing evil.1 PETER 3:14-17
16 All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, 17 that the man of God[b] may be complete, equipped for every good work.2 TIMOTHY 3:16-17 
THE FUNDAMENTALS / DOCTRINE OF THE WORD
There’s power in the fundamentals.
“I am convinced that there is an urgent need in the church today for much greater understanding of Christian doctrine, or systematic theology. Not only pastors and teachers need to understand theology in greater depth - the whole church does as well. One day by God’s grace we may have churches full of Christians who can discuss, apply, and live the doctrinal teaching of the Bible as readily as they can discuss the details of their own jobs or hobbies - or the fortunes of their favorite sports team or television program.Wayne Grudem
14 But even if you should suffer for righteousness' sake, you will be blessed. Have no fear of them, nor be troubled, 15 but in your hearts honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you…1 PETER 3:14-15
15 but in your hearts honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you…1 PETER 3:14-15
“Relationship with God, as with any person, soon requires a contribution from us, which will largely consist of study.”Dallas Willard
“[Christian] Mystics without study are only spiritual romantics who want relationship without effort.”Calvin Miller
“If you do not listen [study] theology, that will not mean you have no ideas about God, rather it will mean you have a lot of wrong ones.” C.S. Lewis
WHAT, WHO, WHY, AND HOW OF THEOLOGY
THEO = god or deity
OLOGY = a subject of study
Theology: the study of the nature of God
Systematic [biblical] Theology: any study that answers the question, “What does the whole Bible teach us today?” about any given topic.
Doctrine: what the whole Bible teaches us today about some particular topic.
“Practical problems have theological answers. So the question is not whether or not you’re going to be a theologian, but what kind of theologian you’re going to be.”Michael Lawrence
Understanding theology is apart of the Great Commission
Jesus said to them, “All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, TEACHING THEM to observe all that I have commanded you; and lo, I am with you always, to the close of the age.”MATTHEW 28:18-20
Understanding theology helps us overcome wrong ideas