MOAR TL;DR goodness follows... but do read if you are interested in this thread.
Jesus Himself distilled the Law into two basic commandments:
1) Love God with all your essence (heart, soul, strength, mind, etc. etc.)
2) Love your neighbour as you love yourself
Everything else is an elaboration and a further definition of the above two (such as forgiving those who offend you and then repent not once, not seven times, but seventy times seven - literally 490x, but understood to be a figure for unlimited forgiveness even as He has forgiven us our sins if we repent).
Another thing God concerns Himself with are matters of social justice - God proclaimed Himself a defender of the widow and the fatherless in the Old Testament:
Deuteronomy 24:17-22 (KJV)
17 Thou shalt not pervert the judgment of the stranger, nor of the fatherless; nor take a widow's raiment to pledge:
18 But thou shalt remember that thou wast a bondman in Egypt, and the LORD thy God redeemed thee thence: therefore I command thee to do this thing.
19 When thou cuttest down thine harvest in thy field, and hast forgot a sheaf in the field, thou shalt not go again to fetch it: it shall be for the stranger, for the fatherless, and for the widow: that the LORD thy God may bless thee in all the work of thine hands.
20 When thou beatest thine olive tree, thou shalt not go over the boughs again: it shall be for the stranger, for the fatherless, and for the widow.
21 When thou gatherest the grapes of thy vineyard, thou shalt not glean it afterward: it shall be for the stranger, for the fatherless, and for the widow.
22 And thou shalt remember that thou wast a bondman in the land of Egypt: therefore I command thee to do this thing.
... and He continues the theme in the New Testament:
James 1:27 (KJV)
Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, and to keep himself unspotted from the world.
God doesn't complicate things. We humans do, and often to disastrous effect.
What is truly an "abomination", (Hebrew: to'ebah תּוֹעֵבָה - offensive, detestable, violation) one that seems to apply across all times, dispensations, and circumstances, is lying
Lying lips are abomination to the LORD but they that deal truly are his delight
Not far behind that is the REAL sin of Sodom which was among other things, selfishness and callousness toward the needs of others:
Ezekiel 16:49-50 (ESV)
Behold, this was the guilt of your sister Sodom: she and her daughters had pride, excess of food, and prosperous ease, but did not aid the poor and needy. They were haughty and did an abomination before me. So I removed them, when I saw it.
That whole business of eating lobsters and wearing mixed blends of fibres in your clothing along with condemning temple prostitution (the very specific matter of sexual sin that the pagan nations in Canaan were engaged in, which often involved child sexual abuse)... was never intended to be a part of the New Testament economy.
God spoke very strongly against those practices as He did not want Israel to get caught up in it and to mix it into their worship of YHWH. (Eventually they did, and this among many other factors lead to their eventual chastisement and diaspora as God removed His protecting hand from them for their disobedience to His covenant).
While cultic temple prostitution persisted well after the fall of the Western Roman Empire, it was no longer a matter to be misunderstood as being a part of the proper worship of YHWH since the temple sacrificial system that once served YHWH on earth was fulfilled in Christ.