One thing to always remember is that if you are 100% in your faith and count God and Jesus as knowledge and take them seriously, the affects of those who persecute you will wash off of you. After altering my thinking, I have found something that give me courage.
Realizing that everything others say against God isn't true, shouldn't affect me. Knowing their "knowledge" is equal to garbage, makes me not feel affected. Looking towards Heaven and realizing this world will fade away, bring me the courage to persue, and not conform to the world.
I wrote about a meme option, now I am going back and editing my post.
I think posting something calling someone a scumbag breaks down their worth, and a meme for atheists is subjective, since not all atheists do certain things. Dealing in absolutes will lead you to become very black and white, leaving you in the sinful ways of being cruel just like those you read post. Don't be a sith (lets see who gets my reference).
I am 17, and age has nothing to do with faith. It's just a matter of how bad you want it and how close you want to be with God. Knowledge is a gift from YHVH, and allowing YHVH to grant you the knowledge of how to build your faith, spread the gospel, and defend Him will help you tremendously in this area.
Just be an example of Christ in every part of your life, whereve you go.
And read the Bible. There are proof of YHVH's existence written in scientific codes and health codes all throughout the Bible. That is so much proof, that is one of my main arguments I use internally when I am going through waters. The Bible is a history book, filled with wonders and knowledge. Study it fowards, backwards, up, and down, until you pass. And help others as well.
Always Love YHVH, Yeshua, and others.
Much love