What is the Bible?
The Bible is scripture. Consider the following verses:
2 Timothy 3:16-17 All scripture is given by inspiration of God and is profitable for doctrine, for reproof, for correction, forinstruction in righteousness. That the man of God might be perfect, throughly furnished unto all good works.
Other verses to be added here
Why the Bible is important
It is extremely important to know the Bible.
Man shall not live by bread alone, but by every word of God (Luke 4:4).
The devil knows the scripture too, but misuses it and quotes it out context to deceive people. Jesus overcame the temptations of devil by correctly applying scripture, quoted in context (see Luke 4:1-13.
Why the Bible is the Word of God
Some people say the Bible is not the Word of God. However there are two Greek words translated “Word” in the New Testament. One is logos and the other is rhema. Logos is the written word, the thought behind what is spoken and rhema is the spoken word on a particular occasion. In Luke 4:4 the word is rhema. Hence we live by the spoken word of God.
While Peter spoke these words (rhema), the Holy Ghost fell on all who heard the word (logos).
Doctrine is important
Read the following scriptures:
Eph 4:14 That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;
1Ti 1:3 As I besought thee to abide still at Ephesus, when I went into Macedonia, that thou mightest charge some that they teach no other doctrine,
1Ti 4:6 If thou put the brethren in remembrance of these things, thou shalt be a good minister of Jesus Christ, nourished up in the words of faith and of good doctrine, whereunto thou hast attained.
1Ti 4:13 Till I come, give attendance to reading, to exhortation, to doctrine.
1Ti 4:16 Take heed unto thyself, and unto the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee.
1Ti 5:17 Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.
1Ti 6:3 If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;
2Ti 3:10 But thou hast fully known my doctrine, manner of life, purpose, faith, longsuffering, charity, patience,
2Ti 3:16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
2Ti 4:2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.
2Ti 4:3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
Tit 1:9 Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
Tit 2:1 But speak thou the things which become sound doctrine:
Tit 2:7 In all things shewing thyself a pattern of good works: in doctrine shewing uncorruptness, gravity, sincerity,
Tit 2:10 Not purloining, but shewing all good fidelity; that they may adorn the doctrine of God our Saviour in all things.
More to be added here, please come back later.