How do we know something is truthful??

Yesterday we learnt about how to tell if something was true. We learnt that we need to have 2 or 3 witnesses. The bible also tells the truth and it says that dinosaurs lived.
By Daniel

Deuteronomy 19:15
One witness is not enough……….. A matter must be established by the evidence of two or three witnesses.

John 14:6
Jesus said “I am the way the truth and the life.”