In Matthew 16, Jesus makes it very clear that His true identity did not come in revelation to Simon (Peter) because of any human effort but because our Father in heaven ordained it to happen at that moment. I didn't start to really grasp the sovereignty of God over the heart of man until my time overseas.
I had my first taste of evangelism in college and God encouraged me by using me in the lives of others and allowing me to see very tangible results. During my first six months overseas I couldn't even make friends, much less share the Gospel. No matter how many lunches I ate with strangers, how many hours I spent on event flyers, or even how clearly I shared my three-minute testimony - I had no control over the hearts of those I was trying to minister to or over their response.
God allowed the word "manufacture" sit in my heart. He taught me in those two years I do not have the power to make anything happen. I will never be able to manufacture anything when it comes to His children.
It honors me to know that God invited me to share His love with my friends overseas and allowing me to see more of not only His heart but the amazing power only He holds.