Does Absolute Truth Exist?

What is the point of believing in an absolute truth if there is no way of knowing it?

I recently got into a debate on Facebook over sexual identity that led to a short discussion (short because the facilitator decided she did not want to discuss it) on absolute truth. I want to repeat here what I told her, and what I hope she read rather than brushing it off in disgust and arrogance. (Please note, this post's focus is on absolute truth, not on whether or not LGBT lifestyle is right or wrong or part of a gene or not.)

Basically, she said, "It is true nobody chooses their sexuality, and as a teacher, I have observed this, I know that I have, that kids are who they are. Period."

In response I wrote, "Truth is not always something that can be observed or concluded based on feelings - based on what we want for ourselves. If an absolute truth exists, and as a Christian I believe that it does exist, then that absolute truth is true regardless of what we desire, feel, want, or observe."

Her response: "If any of us decides what is absolute truth, then we are in essence making ourselves God."

Now we get to the meat of this post. What follows is my final response to what she wrote about absolute truth I've changed some of it (and the quotes above, as well) to protect her identity.

If you believe an absolute truth exists, and if you believe in the Bible and call yourself Christian, then you must be willing to stand up for the absolute truth presented in the Bible. I do recognize that there are plenty of people out there with arguments that say the Bible is OK with homosexuality, transgender, etc. Regardless, the Bible still exists as God's Word and our basis for moral absolutes.

I am not deciding for myself what is absolute truth, and I am not making myself God. As a Christian, I am restating God's absolute truths, which I believe in. By definition, a Christian is someone who believes that Jesus died for their sins to save them, that He is the only way to salvation, and that His absolute truth, which is presented in the Bible, is the absolute truth.

To say that we cannot take a stance on what is absolute truth without making ourselves to be God is basically to say that there is no way of knowing absolute truth, that absolute truth may not exist. And if we cannot know what absolute truth is, shouldn't we live our lives according to our own subjective morals (which, consequently, does lead to making up our own absolute truths and living by them).

So what is absolute truth? Can it exist? And can we believe in it and take a stance on what it is without making ourselves gods? As I stated above, I believe absolute truth does exist. I base my moral convictions on the absolute truth that the Bible presents. And I really don't see how one can believe in an absolute truth without taking a position on how that truth should apply to our own lives. I don't see how one can believe an absolute truth exists, but throw it aside in favor of what seems right to the individual just because that absolute truth does not make complete sense - just because that truth is not 100% evident to us or does not agree with the way we want things to be.