Okay, so I assume by truth you mean Sabbath keeping. Adventist.org is the official website of SDA. If you doubt me, go
there. Click the Menu link and you'll see the following: "Adventist.org is the official website of the Seventh-day Adventist church."
Adventist.org has a document explaining SDA beliefs about Sabbath keeping. It can be found
here: Scroll down to No. 6, "Sabbath and the Authority of God’s Word." It states the following:
"The Sabbath as a sign of the Creator points to His ownership and authority. Meaningful Sabbath observance, therefore, indicates the acceptance of God as Creator and Owner and acknowledges His authority over all creation, including oneself. Sabbath observance is based on the authority of God’s Word. There is no other logical reason for it.
Human beings have the freedom to enter into a relationship with the Creator of the universe as with a personal friend."
Now, let me ask you: In your reading of the scriptures, is Sabbath keeping the way we enter into a personal relationship with the Creator? Notice also the part in bold in the first paragraph. The logical conclusion is that if you don't keep the Sabbath you're denying the Creator. I'd like to know on what authority in God's word they base these beliefs. The answer is simple: their authority isn't God's word but Ellen G. White.
So SDAs stand for the truth? That's laughable. Read all of No. 6 in the link above and see if you can spot all the other lies.