When we say that we will speak the Truth, what does that mean? Is such a thing possible? Can there be someone who can speak the truth to you. You will only hear the message of Truth when you are ready. Receiving any message is more about you letting up all defences than the power of the message being conveyed. Truth cannot enter us, as can no real message unless we lower our filters (of the ego) and let it in.
If such a Truth speaking is even possible, it can never be encountered as such as the message is changed as soon as it is received (observed). Everything arises from the one truth, while it is the truth itself. When we try to speak some greater truth the essence is lost as information is transferred from layer to layer. From one part of the brain to the next. Through one filter of conditioning to the next. From this to the then language, then through the air as speech or Written down.
Then to the eyes and ears of the receiver. Then into their brain and so forth. At each step of this process information is changed. Information can’t cross any boundary without incurring noise and the actual message being changed. It’s a law of physics and information theory that holds true when looking at the non dual nature of reality.
All that people can do is to point to truth. If you are still seeking at all try to find these markers along the way. Those that are brave enough to point directly to the truth, and not to themselves.