The Goblin realized that his raiding party had been all but been wiped out and began to flee this would provoke the cleric that was standing beside him. 
[Hider=Opportunity attack from Elki] 
[b]Elki Attack roll:[/b] 1D20 = (6)+3 =9
[b]Result:[/b] Fail
[/hider]
Goblin moves from B15 to E23
[hider=Bonus Action] 
[b]Stealth Roll:[/b] 1D20 = (10)+4 =14 
[b] Result[/b] anyone with a passive above 14 may see him
[/hider] 
The goblin is attempting to escape the battle field.