Careful with this verse. Paul was in the middle of a sermon here about the Spirit, and the manifestations of the Spirit. By voices, he was referring very specifically to languages...global languages. But, you can go so many directions with these simple words. There are many voices in our own language...many people talking and it is often difficult to distinguish which voice has significance. Best practice is to keep your focus on The Word. When you are unsure where the right answer lies, or which direction to take, open the Bible. It will have the answers. Paul wasn't talking about conflicting messages though or truth, was he?
But, she was a woman who heard so many different messages that she was uncertain who to listen to anymore, the Samaritan Woman at the Well. Then she met a man who told her everything. Naturally she was thirsty for more answers from The Word made flesh (incarnate.) It always seems like the more thirsty I am for truth, the more readily God's Word flows from my heart and memory. My memory is not what it used to be. I often can't recall verses at will anymore, let alone whole chapters. Yet, when I need the truth...when I feel dry and thirsty, there the verses are, flowing down like Isaiah's rivers in the desert. The Word of God is a wonderful gift to mankind. I build my faith on it to the extent I really don't hear anything that doesn't come out of or match the Bible. Call it selective hearing. It's not such a bad thing. :)
Are you hungry for truth? God is the Word, and the Word is truth, so God is truth. If you have God, you have truth.
John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
John 17:17 Sanctify them through thy truth: thy word is truth.
There are two faces of atheism. Some atheists are considered "Stong Atheists," in that they believe that there is no God. But, some are considered "Weak Atheists" because they simply have no belief , they have no faith at all. They can't believe that there is a God, while the first believes strongly that there isn't a God. But, oddly there are no atheists in grave yards...neither will you find the grave of an agnostic. No, the dead know that there is a God, as do the devils. Even Darwin is a believer now. He was converted at death, when he discovered his spirit did not die with his body. That's a chunk of truth to sleep on tonight.