There are assumptions here by you, like that their priestly class had communications with the Gods and listened to them. Did they? How do you know that?
There has never been any real physical proof of human sacrifice in Phoenicia/'Canaan'. Even the Greek accounts claimed that if this did exist it was a very ancient practice (like Bronze Age retardation) the inhabitants of Tyre had long abandoned by Alexander's time. There is in fact far more evidence of it in very limited amounts among the Celts, Slavs and Vikings (due to general stupidity) than anywhere in the Levant. Much like in Europe, African human sacrifice is generally pretty limited.
The evidence in Carthage is more convincing because urns of mostly infants were found, yet bone analysis of the bones does not support the ancient accounts nor is it possible to date the bones themselves. Even the pro-sacrifice group admit the bones are all characteristic of an open funeral pyre, not a pizza furnace inside a statue. The story with some of those also goes that teenage boys offered themselves up to be killed, which has never been found.
The Aztec and Maya case is something completely different and borne out by hard evidence. Both of these civilizations were already violent, yet both were also pretty advanced on the material side (Tenochtitlan is an engineering marvel) and the distortion took it to another level. This was progressively a corruption of evil by the point that in 1500, every Aztec festival was characterized by it. The Gods have emphatically told me many times they ordered them to stop.
There were enemy interventions here. If you have abilities yet choose to tune into the enemy or some filthy astral spirit hostile to humanity and do what they say as a group, then you can end up vulnerable to everything. But to go that far shows longstanding corruption and extreme fear (hostility) towards the Gods in the first place.
In any case, people must get it out of their heads that every civilization's interpretation was 'equally valid'. Greece, Rome, Egypt (until the end) and India adhered to the Gods, others have often gone wildly off track. That includes milder cases like Persia where a lot of the distortion came from royal hubris.
You can also have cases like Porphyry where someone who is in an advanced civilization and so on can go crazy and be mentally unbalanced. One unbalanced person is one thing, a whole group is another.
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