Are All the Answers We Need Found in the Scriptures?

I love this answer from Joseph Fielding McConkie from his book Answers on pg. 227:

No. This is the party line of apostate religion, and  it is called the doctrine of sufficiency. The claim is that the Bible contains all that is or ever can be necessary for the benefit of man. In making such a claim, they are sealing the powers of the heavens, silencing God, doing away with the need for living prophets, and denying the power of the Holy Ghost. For a Latter-Day Saint (Mormon) to say the same thing of the standard works (Book of Mormon, Doctrine and Covenants, Pearl of Great Price) is to agree in principle with this basic dogma of the Apostasy. Nephi said of such a notion, "For unto him that receiveth I will give more; and from them that shall say, We have enough, from them shall be taken away even that which they have" (2 Nephi 28:30). 

I testify that there is one true living prophet on the Earth today who speaks to God and that is Thomas S. Monson. I know that God continues to give His children counsel because He loves us. Miracles and great works still happen and the powers of heaven are real and continue to bless our lives through the gift of the Holy Ghost. His love, commandments and counsel did not end with the New or Old Testament. God continues to reveal more to us for the purpose of edifying us, lifting us up and helping us return to Him. He speaks to us today. I say this in the name of Jesus Christ amen.