We are not told his name, nor anything else about him except that he is Abraham's servant. But his fidelity to his duty is crucial to God's plans.
You will note that he doesn't pray to his own god, but the God of his master. Does he believe in Abraham's God? We're not told that. At least he believes God has power - the power to make his journey for Abraham successful.
Can God use an unbeliever to further His kingdom? God can do anything.
We are told the the servant sets out on his journey well-prepared. He comes to the appointed place and gets right to the point with Rebekah, Laban and Bethuel. He was commissioned. He prepared. He journeyed. He prayed. He followed through.
What is our commission, and how do we respond to it? Jesus said "Go ye into all the world, and preach the gospel to every creature." (Mark 16:15 - KJV) That is our primary commission.
How do we prepare? We must fill ourselves with the word of God, become intimately acquainted with Him.
We pray, always, for the success of this journey. If our works are not bathed in and grown from prayer, they will have no meaning.
Then we journey into the world, prepared to answer all questions, being transparent about our love of God and His presence in our lives. We speak gently, but boldly. And we love - unconditionally.
Keep us ever faithful to our servant-hood and grant us favor in furthering your Kingdom.
In Jesus' most precious name.