Sexual immorality includes a lot of things. The Bible is the guide to what is and isn't acceptable. Sexual relations between a man and woman are sanctified by marriage. Anything else is immoral.
How to Qualify a NO Answer
The Traditional Understanding of “Let there be Light”
The first major split between Matty's Paradigm and Creationism is in answering the question: What's the source or nature of the light that the Lord created on the first day of creation?