The Bible that we have now, in all of it's versions, are not the original Word of God. They are merely copyist versions, words translated, some twisted, most simplified and the truth stands that one needs the Holy Spirit to understand the truth of whichever chapter they are reading, not just the logical aspect of the paragraphs.
The "Bible(s)" we have today are not the way to God. Jesus is The Way.
John 14:6 (KJV)
6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
However, that someone is right in saying that the Bible is the correct articulation of God (whatever they mean) because it is the inspired Word of God. Famous and inspirational books by men and women of God are exceptional and written with the move of the Holy Spirit, but the Bible always comes first.
Acts 17:11 (KJV)
11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
Though there are many versions and yes the Bible always comes first, take care when you tally other's teachings with the Bible.
Hebrews 4:12 (KJV)
12 For the word of God is quick, and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
Whichever versions you read or whatever you're told, discern! Read the Bible and any spiritual books prayerfully, that God may anoint thy head and the Holy Spirit move mightily to guide you.
Ephesians 1:17 (KJV)
17 That the God of our Lord Jesus Christ, the Father of glory, may give unto you the spirit of wisdom and revelation in the knowledge of him:
Knowledge of Him means everything, including knowledge of the Devil who is called Satan.
There are many hidden commands that are not explicitly commands like Ephesians 1:17. It's basically saying if you are faithful, God will give you the knowledge you need at whichever point in time so yes, the Bible is the only book of God and it's commands are infallible. I'm sure if somehow a servant is put in a situation where they need to know about God, God will give them the revelation that is relevant to them.
The Word should not be knowledge interpreted by man but be wisdom given by God through faith in our Lord Jesus Christ.
God bless you and keep you,