Study to show yourself approved ..... 2 Timothy 2:15.
Daniel 10:21(KJV) But I will shew thee that which is noted in the Scripture of Truth.

We Believe the Bible/Scripture is the Main source for truth. All teachings must have two or more witnesses (scripture references) to be considered truth.

Deuteronomy 19:15 (KJV)

One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.

2 Corinthians 13:1

This is the third time I am coming to you. In the mouth of two or three witnesses shall every word be established.

Isaiah 28:10

For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little.

John 5:39

Search the Scriptures, for in them ye think ye have eternal life: and they are they which testify of me.