This is a thought provoking quote from Charles H. Spurgeon, a 19th century evangelist prominent for his lectures and sermons. These are some things i gather from reading the quote:
1. Do not wait for opportunities to do great things for God.
2. Big opportunities begin from even the most menial tasks.
3. Be humble.
4. God exalts those who humble themselves.
5. It is God who exalts, not us.