"When a young man made an open profession of the gospel, his father, greatly offended, gave him this advice: 'James, you should first get yourself established in a good trade, and then think of matters of religion.' 'Father,' said the son, 'Jesus Christ advises me differently; he says, 'Seek ye first the kingdom of God.'" - From Spurgeon's Sermon Notes
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray