It’s the nature of the way Leviticus is used. That passage pulled out at random and NEVER EVER quoting the passages about shellfish, slavery, mensturation or mixing fibres in clothing. Just explain to me why only the passages pertinent to homosexuality are held up as Holy Writ and the others almost universally ignored by Catholics. Explain that and I will begin to understand. Explain how one passage of Leviticus matters and the next one is fine to ignore
The Leviticus passages that still obtain are not limited to the proscription of homosexual behavior. to wit:
1The LORD said to Moses:
2Speak to the whole Israelite community and tell them: Be holy, for I, the LORD your God, am holy.* a
3* Each of you revere your mother and father,b and keep my sabbaths.c I, the LORD, am your God.
4Do not turn aside to idols, nor make molten gods for yourselves.d I, the LORD, am your God.
11* You shall not steal. You shall not deceive or speak falsely to one another.h 12You shall not swear falsely by my name, thus profaning the name of your God.i I am the LORD.
13You shall not exploit your neighbor. You shall not commit robbery.
14* You shall not insult the deaf, or put a stumbling block in front of the blind, but you shall fear your God. I am the LORD.
15You shall not act dishonestly in rendering judgment. Show neither partiality to the weak nor deference to the mighty, but judge your neighbor justly.k
16You shall not go about spreading slander among your people; nor shall you stand by idly when your neighbor’s life is at stake. I am the LORD.
17* You shall not hate any of your kindred in your heart. Reprove your neighbor openly so that you do not incur sin because of that person.l
18Take no revenge and cherish no grudge against your own people. You shall love your neighbor as yourself. I am the LORD.m
29You shall not degrade your daughter by making a prostitute of her;u otherwise the land will prostitute itself and become full of lewdness. 30Keep my sabbaths, and reverence my sanctuary.v I am the LORD.
31Do not turn to ghosts or consult spirits, by which you will be defiled.w I, the LORD, am your God.
32Stand up in the presence of the aged, show respect for the old, and fear your God. I am the LORD.
35Do not act dishonestly in using measures of length or weight or capacity. 36You shall have a true scale and true weights, an honest ephah and an honest hin.* z I, the LORD, am your God, who brought you out of the land of Egypt.
Today no major Christian church requires observance of all 613 precepts of the Old Testament law, ethical and ceremonial, but only the ethical commands such as the Decalogue and command to love God and neighbor.