[af_vet_1981]

I disagree that they are Christian believers.

Based on what evidence or authority ? They are essentially separated Protestant Baptists.

The Seventh-day Adventist church traces its roots to American preacher William Miller (1782–1849), a Baptist who predicted the Second Coming would occur between March 21, 1843, and March 21, 1844. Because he and his followers proclaimed Christ’s imminent advent, they were known as “Adventists.”

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By virtue of their valid baptism, and their belief in Christ’s divinity and in the doctrine of the Trinity, Seventh-day Adventists are Christians. But Christians, once separated from the Church our Lord founded, are susceptible to being “tossed to and fro and carried about with every wind of doctrine” (Eph. 4:14).

[ealgeone]

>>White claimed to receive the first of several hundred visions in December of 1844.<<

that's more in line with your camp.

[aMorePerfectUnion]

No. I disagree with you view entirely.
They are a heresy/cult.