In response to Robert B. Goodsell's May 21 letter, "Some certainties aren't so absolute," marriage as God ordained it, between a man and a woman, is absolutely in the Bible. Look in your Bible at 1 Timothy 1, verse 10 and 1 Corinthians 6, verse 9 for references to the wrongness of homosexuality. It can't go both ways.
Separation of religion and government (church and state) is not in the Constitution. What is in the Constitution is freedom of religion, which says the government cannot tell the people what religion to belong to or what churches can and cannot believe.
Regarding Leviticus, "love thy neighbor as thyself" does not mean sexual or romantic love. It is agape, or brotherly, love, treating others as you want to be treated, as Jesus treated people. Reading the Bible is not enough to learn these truths. You may need to attend a Bible study to understand what it all really means. But don't go to http://skepticsannotatedbible.com for the truth, for that publication is not ordained by God.