Sir, According to my knowledge there is no difference between the GOD and the ALLAH both are name of The GOD in different Languages. Like in English GOD, in Urdu KHUDDA, in Arabic ALLAH, in Hindi ESHWAR or BHGWAAN, in Dutch HEER. In Hebrew concept about the GOD was EL in aroma ELI as JESUS said on cross ELI lama Shabektani. If you check Urdu translation you will find these evidence, 1 Exudes 31:3 and 2nd is Exudes 35:31. If you see the Arabic bible use Allah for GOD because they have no other word for GOD but ALLAH .In the time of Abraham people ador ala of Ella that was the false god or Satan but the concept of those people Ella was god for them. Because they had no other word for God but Ella. One of my Muslim friends asked me! Watson we have holly language Arabic. Witch holly language you have? I said. There is no holly language in the world If you pray in any language that is holy for you and Arabic is the just a language. The People spok Arabic before Islam. According to Quran 570 AD an Angle came to Maryam and said Asalam-ul lakam . That proves the people of Middel east before Islam spoke the Arabic language.