The Aramaic word for " God " in the language of Assyrian Christians is ʼĔlāhā , or Alaha . Arabic @-@ speakers of all Abrahamic faiths , including Christians and Jews , use the word " Allah " to mean " God " . The Christian Arabs of today have no other word for " God " than " Allah " . ( Even the Arabic @-@ descended Maltese language of Malta , whose population is almost entirely Roman Catholic , use Alla for " God " . ) Arab Christians , for example , use the terms Allāh al @-@ ab ( الله الأب ) for God the Father , Allāh al @-@ ibn ( الله الابن ) for God the Son , and Allāh al @-@ rūḥ al @-@ quds ( الله الروح القدس ) for God the Holy Spirit . ( See God in Christianity for the Christian concept of God . )