God is always using the little people, and He always uses people doing "little" things, like giving the cup of cold water. He uses the things that seem insignificant, like the swaddling clothes, the manger, and the animals' crib. He always uses the small things and the little things-but in His eyes, they are very big. Why? Jesus Christ is for us.
Moses could not speak well, so he used Aaron to speak for him. Because of a speech impediment, he thought he could not be used. But God used Moses to lead two and a half million people out of Egypt.
God could have used a tall, handsome man to bring the Gospel to the Gentiles, but instead He used a very short man who had a tremendous eye problem and a squeaky voice. The apostle Paul was considered ugly in his appearance. They said, "…his bodily presence is weak, and his speech contemptible." He was rejected in Corinth. But God used this little man and raised him up to reach all the Gentiles.
The Lord uses so many different personalities. He doesn't care how little you are in your own sight or where you came from. He can use you.