Is the bible enough?
The bible contains everything that we need to know for salvation and godly living. The bible teaches this about itself. Ephesians speaks of the testimony of the Ephesian believers who heard the word of God and believed unto salvation.
13 In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,
Paul writes a similar testimony about the salvation of Timothy.
2 Timothy 3:14-17
15 and how from childhood you have been acquainted with the sacred writings, which are able to make you wise for salvation through faith in Christ Jesus. 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 may be complete, equipped for every good work.
And Peter writes of the power that has given us knowledge of all things for life and godliness.
2 Peter 1:3-4
3 His divine power has granted to us all things that pertain to life and godliness, through the knowledge of him who called us to his own glory and excellence, 4 by which he has granted to us his precious and very great promises, so that through them you may become partakers of the divine nature, having escaped from the corruption that is in the world because of sinful desire.