The Apostle Peter wrote that God “has given to us all things that pertain to life and godliness, through the knowledge of Him who called us by glory and virtue.” (2 Peter 1:3) In other words, the Bible is sufficient for everything you might need concerning spiritual matters. Want to know your purpose on earth? The answer is in Ecclesiastes 12: 13. Want to know if there is more to this life than what you can see? Read passages like Luke 16: 19-31; 2 Corinthians 5: 10; Hebrews 9:27; 2 Thessalonians 1:7-10; and Revelation 20:12-15. After learning those things, you will probably want to know how to be prepared for the next life. Again, the answer can be found in Mark 16:16; Acts 2:37-47, 16:30-33; and Romans 6: 1-18. Even still, this is just a small portion of what Peter means by the “knowledge of Him.”
In addition to what Peter wrote, Paul had this to say about the Bible, “All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.” (2 Timothy 3:16-17) Paul is saying that the Bible is not only useful for learning about God and being convicted by what is right, but also how to get right and stay right with God. That’s what he means by “being complete.” It implies it is also possible to be incomplete, meaning, not having done all that God requires of us.
A great example for illustrating this principle is King Saul. He was told by the Lord to “Go, and completely destroy the sinners, the Amalekites, and fight against them until they are consumed.” ( 1 Samuel 15: 18) Saul went. He fought against them. But, he “brought back Agag king of Amalek” and allowed the people to bring back part of the plunder “to sacrifice to the Lord.” So Samuel said, “Behold, to obey is better than sacrifice, And to heed than the fat of rams.” (1 Samuel 15:20-22) Saul did not complete all that God had required him to do! Thus, Saul was incomplete in his obedience.
So, are YOU complete? Have you obeyed the things God has commanded? (cf. Matthew 7:21-23) Are you fully submitting to the requirements He has for you? To determine if you are, consider the following questions:
There are several more questions we could easily add to this list, such as: Are you attending worship? (Heb 10:25) Loving your spouse as you should? (Eph 5:33) Studying your Bible? (2 Tim 2:15) Serving others? (Matt 25:34-40). If the Bible tells you everything you need to be complete, then why would you want to be incomplete?