At the age of about 12, Gill heard a sermon from his pastor, William Wallis, on the text, "And the LORD God called unto Adam, and said unto him, Where art thou?"
Ketika berusia sekitar 12 tahun, Gill mendengar sebuah kotbah pastornya, William Wallis, berdasarkan nas, "Dan TUHAN Allah memanggil Adam, dan berkata kepadanya, Di manakah engkau?"