I was looking at “reward” in the Topical Guide and I saw the above verse cited.  I saw it differently than I had before.  Previously, I thought “I am thy…exceeding great reward” just meant that it was Abram’s reward and privilege to have God in his life.

Today I realized Abram already had God in his life. He was promised more--the prospect of becoming like God.  The Lord meant, “I [or what I am] is thy exceeding great reward, what you can expect to become.” 

I love that the promise of becoming like God is recorded this early in the Bible.