Why and how did Griffin rob …

Sorry there is a mistake it's not "wearing upon his spectacles" please omit it while reading the answer

Thanks 

Rishab

{Also known as topper}

Griffin had no money left to pay bills required for his food and other things so ,he decided to rob the Vicar's house on whit-monday ,the day was devoted to club festivities in Iping. Mrs. Bunting woke up in a sudden strangeness that came before dawn, she heard sound of barefeet walking through the house . She aroused her husband quickly who did not strike light but wearing upon his spectacles  he went on the landing to listen . They heard the sound of clinking of money, and realised that the thief had found their housekeeping reserve of gold. Both rushed into the room but found the room empty and discovered that their money had disappeared