Deuteronomy 23

 1 He that is wounded in the stones, or hath his privy member cut off, shall not enter into the congregation of the Lord.

Thank goodness temple recommends aren't like that anymore. Then again, if you've had a sex change, you can't really go through the temple.

 2 A bastard shall not enter into the congregation of the Lord; even to his tenth generation shall he not enter into the congregation of the Lord.

Now that's just mean. How is it the kid's great x10 grandkids' fault? Then again, Dallin H Oaks said that a child conceived by rape holds the sins of the father, or something to that effect, so maybe this is similar to that.

 3 An Ammonite or Moabite shall not enter into the congregation of the Lord; even to their tenth generation shall they not enter into the congregation of the Lord for ever:

 4 Because they met you not with bread and with water in the way, when ye came forth out of Egypt; and because they hired against thee Balaam the son of Beor of Pethor of Mesopotamia, to curse thee.

 5 Nevertheless the Lord thy God would not hearken unto Balaam; but the Lord thy God turned the curse into a blessing unto thee, because the Lord thy God loved thee.

God is a jealous God.

 6 Thou shalt not seek their peace nor their prosperity all thy days for ever.

 7 ¶Thou shalt not abhor an Edomite; for he is thy brother: thou shalt not abhor an Egyptian; because thou wast a stranger in his land.

 8 The children that are begotten of them shall enter into the congregation of the Lord in their third generation.

 9 ¶When the host goeth forth against thine enemies, then keep thee from every wicked thing.

 10 ¶If there be among you any man, that is not clean by reason of uncleanness that chanceth him by night, then shall he go abroad out of the camp, he shall not come within the camp:

Sleep walking? Bed wetting?

 11 But it shall be, when evening cometh on, he shall wash himself with water: and when the sun is down, he shall come into the camp again.

 12 ¶Thou shalt have a place also without the camp, whither thou shalt go forth abroad:

 13 And thou shalt have a paddle upon thy weapon; and it shall be, when thou wilt ease thyself abroad, thou shalt dig therewith, and shalt turn back and cover that which cometh from thee:

Yay cleanliness!

 14 For the Lord thy God walketh in the midst of thy camp, to deliver thee, and to give up thine enemies before thee; therefore shall thy camp be holy: that he see no unclean thing in thee, and turn away from thee.

Still relevant today, but in a spiritual rather than temporal way.

 15 ¶Thou shalt not deliver unto his master the servant which is escaped from his master unto thee:

God is an abolitionist

 16 He shall dwell with thee, even among you, in that place which he shall choose in one of thy gates, where it liketh him best: thou shalt not oppress him.

 17 ¶There shall be no whore of the daughters of Israel, nor a sodomite of the sons of Israel.

Anal sex isn't necessarily so bad.

 18 Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the Lord thy God for any vow: for even both these are abomination unto the Lord thy God.

How is the price of a dog an abomination?

 19 ¶Thou shalt not lend upon usury to thy brother; usury of money, usury of victuals, usury of any thing that is lent upon usury:

 20 Unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury: that the Lord thy God may bless thee in all that thou settest thine hand to in the land whither thou goest to possess it.

"unto a stranger" - But aren't we supposed to love our neighbor? And isn't our neighbor, as defined in Luke 10, technically everyone we encounter?

 21 ¶When thou shalt vow a vow unto the Lord thy God, thou shalt not slack to pay it: for the Lord thy God will surely require it of thee; and it would be sin in thee.

covenants

 22 But if thou shalt forbear to vow, it shall be no sin in thee.

You can't break covenants you never make.

 23 That which is gone out of thy lips thou shalt keep and perform; even a freewill offering, according as thou hast vowed unto the Lord thy God, which thou hast promised with thy mouth.

 24 ¶When thou comest into thy neighbour’s vineyard, then thou mayest eat grapes thy fill at thine own pleasure; but thou shalt not put any in thy vessel.

 25 When thou comest into the standing corn of thy neighbour, then thou mayest pluck the ears with thine hand; but thou shalt not move a sickle unto thy neighbour’s standing corn.