Your list is too short. 
From scripture, add the modern Simeon and Anna, the old homeless man and woman hanging around outside the temple. Luke ch 2
And the young woman, pregnant but not by her husband, who appears with them. 
The young woman also gives us an example, as she stored the things she heard in her heart, pondering them
Listen when people speak. If they believe what they say, you will hear it in the way they talk. Hold it in your heart to know if you believe it, if this is how God speaks to you. It is rare that you will identify truth by the degrees or titles of the speaker, though those may contribute. It is just as rare that you will identify falsehoods by the presence or absence of degrees or titles.