Today we hear a lot about being your authentic self, especially in relation to the LGBTQ community. To be authentic is to be true, genuine, or real.
(Genesis 1:1)"In the beginning, God created the heavens and the earth." (ESV)
God is the Creator and everything else is the creation. God is God and we are not. Therefore God is the ultimate authority in all matters, including what is actually authentic.
(Genesis 1:27)"So God created man in his own image, in the image of God he created him; male and female he created them." (ESV)
God created man in his own image, therefore we are to be God's representatives on earth. God created humans as male and female. You are who God created you to be and you have no authority to change that. A man is a man and a woman is a woman.
(Genesis 2:24)"Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh." (ESV)
Sexual relations are to take place between a man and a woman who are married. People of the same sex cannot be married.
Those in the LGBTQ community are actually being inauthentic because they are not being true to the way God created them. They are in rebellion against God's creative design and have embraced falsehood instead of truth.