Allah is the male synonym to allat the moon goddes. Allah has nothing to do with Jesus or Jahovah.
Issa is Jesus in Arabic countries (Christians)
Christians use the name 'Allah in Arabic, which is believed to be related to Hebrew 'Eloah, of which 'Elohim is a plural. The evidence seems to point to the idea that 'Allah was the preIslamic word for God.
In Hebrew, 'el', 'eloah', and 'elohim' could refer to other entities besides the God of Israel also.