The Bible totally and uncompromisingly rejects the act of homosexuality and same-sex marriage from cover to cover, just like it condemns adultery, fornication, and even unchaste thoughts.
The first indication of this can be found in the creation story, which occurs in the first book of the Bible, Genesis:
“So, God created man in his own image, in the image of God He created him; male and female He created them.” (Genesis 1:27)
It can be clearly seen that God created man male and female. He did not create two men or two women. And He commanded them to multiply. (Genesis 1:28)
So, God’s plan for man has been that two people of the opposite sex, as male and female only, marry and multiply, that is, procreate. There was no intention of homosexuality, for He did not create other men or women for Adam and Eve to marry. Another confirmation of this arrangement is found in the following verse:
“Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.” (Genesis 2:24).
Here it is said a man and his wife and not his husband, and wife is understood to be a female, since Adam only had Eve as his companion.
And, in marriage, God says that these two form one flesh, that is, one unit. So the idea of polygamy is also against the arrangement of God as described in this verse.
The following Bible passages clearly establish that God rejected homosexuality (the act, the idea, etc…) and even punished the people who practiced it.
a. The destruction of Sodom and Gomorrah and the rescue of Lot from the coming judgment in Genesis 19:1-13.
Not only did God destroy the people of Sodom and Gomorrah because of their homosexual practice, but He also burned their cities outright. A judgment from God!
b. The laws that God gave to the Jewish people in the book of Leviticus:
“Thou shalt not lie with mankind, as with womankind: it is an abomination.” (Leviticus 18:22; KJV)
“If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination.” (Leviticus 20:13)
The New Testament is consistent with the Old Testament in condemning homosexual practice. In the Epistle to the Romans, St. Paul states:
“Who changed the truth of God into a lie, and worshiped and served the creature more than the Creator, who is blessed forever. Amen. For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature: And likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet.” (Romans 1:25-27)
Since God does not change, homosexuality is still a sin and therefore against God’s will to this day.
c. The Bible teaches that such have no part in eternal life
Don’t you know that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind, nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God. (1 Corinthians 6:9-10)
“Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers. For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine. According to the glorious gospel of the blessed God, which was committed to my trust.” (1 Timothy 1:9-11)
The Bible teaches here in several places not only that homosexuals but also child molesters and those who disregard and do not obey the law (outlaws) including homosexuals. For the commandment is unequivocally clear that homosexuality is against God’s will and purpose for man.
d. Homosexuality and gay marriage are against God’s will and intention
“And He answered and said to them, Have you not read, that He which made them at the beginning made them male and female.” (Matthew 19:4)
From the above Bible verse it can be shown very well that Jesus (God as man) clearly states that the intention of man’s marriage and procreation was intended to be between a man and a woman.
e. Homosexual behaviour (clothing, etc…)
The woman shall not wear that which pertains to a man, nor shall a man put on a woman’s garment: for all that do so are abominations unto the LORD your God. (Deuteronomy 22:5)
Even homosexual behaviour, such as dressing like the opposite sex, is an abomination and forbidden in God’s eyes.