According to the Centre for Legal Aid, Assistance and Settlement (CLAAS), a Christian charity that helps persecuted Christians in Pakistan, Pastor and three others have been accused of using the word "Rasool" or Apostle to describe Pastor Gill's late father, Pastor Fazal Masih, who had established the local Biblical Church of God several years ago.
Nasir Saeed, Director CLAAS-UK, said that it is very sad that Muslims have misunderstood the meaning of the word and taken it in the wrong sense.
"The word Rasool has been used several times in the Urdu Bible as a translation of Apostle and disciples etc, and Christians, lay and clergy used this word in their sermons and even in their writings.
"This is not an Islamic word but of the Urdu language, the national language of Pakistan and spoken by all Pakistani citizens, Muslim and non-Muslims alike, and cannot be attributed to Islam or the Muslim.
"To be offended over the use of such and other words and subsequently charging someone under the blasphemy law is very unfortunate.
"Since we know this law is being misused, the police and authorities need to be careful and avoid registering a case against anyone because of pressure from the public."
Unitan Gill, Pastor Aftab's younger brother was arrested, but CLAAS says it has been able to get him released on the bail until September 25 and CIA inspector Anar Khan is investigating the matter.
Unitan told CLAAS that he runs a grocery shop in local area and also has English teaching academy, and they are doing very well but Muslim businessmen are jealous of their success and it was local grocers who brought the claims to the police's attention.
Gill also told the team that the police are threatening and harassing family members and relatives of those accused of blasphemy.
CLAAS says the Christian population is very small in this area with about 100 to 115 families. A few families have fled for security reasons.