Read the following

Surah An’am Verse 40-41

Say: “ Think ye to yourselves,
If there come upon you The Wrath of God,
Or the Hour(that ye dread),
Would ye then call upon
Other than God?
(reply) if ye are truthful!

“Nay,- On Him would ye
Call, and if it be
His Will, He would remove
(The distress) which occasioned
Your call upon Him
And ye would forget
(the False gods) which ye
Join with Him!

If Allah is so merciful to grant dawah to a poltheist (Who Allah deems worthy of his mercy before they die ), how easy will it be for Allah to forgive Christians and Jews.

Allah is merciful mashallah.