Today is my second week to go to the Bible study on Esther, and one of the passages from chapter 4 is: "And who knows but that you have come to a royal position for such a time as this".
Esther had been appointed queen, and her people (the Jews) were under the threat of total annihilation by an evil man named Haman. It was her cousin Mordecai who said these famous words to her, as he was pleading with her to go to King Xerxes to beg him to deliver the Jews from this holocaust.
Had Esther not gone to the King for mercy towards her people, God would have found another means to accomplish this, but she was faithful to God and to her people, and deliverance came to them.
We can apply this verse to our own lives as well - the Bible says that as believers, we are a part of God's royal family. We are called to stand up for those who are being persecuted, for those who are oppressed and lost, and the blessings we recieve from the Lord in our obedience to that call are without end.
If God asks us to do something, and we fail to obey him in it - whether it's for fear of looking silly, or any other reason, then we rob ourselves of a blessing. He will find someone else to carry out His will, but when he asks us to do something - it's because He knows that he's arranged everything and prepared us in every way to carry out the task, or He wouldn't have asked us in the first place!
Don't rob yourself of the blessings of obedience - what might seem silly or makes you feel like you're not capable of doing what the Lord has asked, is actually a lie from hell, in an effort to thwart God's purpose. That will never happen - God's will is always done - no matter who He uses. Let him use you today!