Disciple, don’t be deterred by those rubbishing our claims.
Simply request that they do you the courtesy of pushing on their alternative claims just as hard. You’ll usually find their position takes atleast as much faith as yours.
When it comes to issues like the beginning of the universe, or the ultimate nature of reality, it is only faith positions that are available.
Disciple, if He is the truth, then the harder we search and research, the closer we’ll come.
Don’t be afraid.