1 Samuel 3:8
Once again, for the third time, the Lord called Samuel. He got up, went to Eli, and said, “Here I am; you called me.”
Then Eli understood that the Lord was calling the boy. 
Job 33:14-15
                            
but a person may not notice it.
1 Corinthians 13:11-12
                            
I spoke like a child,
I thought like a child,
I reasoned like a child.
When I became a man,
I put aside childish things.
Treasury of Scripture Knowledge
Summary
                            And the LORD called Samuel again the third time. And he arose and went to Eli, and said, Here am I; for thou didst call me. And Eli perceived that the LORD had called the child.                        
                    The third
Bible References
The third
                                        Job 33:14                                        For God speaks time and again,
but a person may not notice it.
 
                                    
                                                            
                        but a person may not notice it.