We found "doubter" used in 1 sacred songs, each carrying a unique message of faith.
doubter
...Once for all—oh, sinner, receive it;
Once for all—oh, doubter, believe it;
Cling to the cross, the burden will fall,...
Once for all—oh, sinner, receive it;
Once for all—oh, doubter, believe it;
Cling to the cross, the burden will fall,
Explore random hymns and find new inspiration