Psalm One mentions that the Christian is someone who will prosper in all that he does. What does this mean? Does this mean that the Christian should be rich, with money to spare, not a financial care in the world?
Clearly not, otherwise many New Testament saints would have done much better than they did. Paul the Apostle describes the poor saints in Jerusalem who required charity. This did not make these, who were less physically prosperous, any less Christians.
So what does the scripture mean when it speaks of the Christian prospering in this psalm? Well, just to confuse the issue a little, I don't think that financial prosperity is ruled out. Whatever the Christian puts his hand to, this he will prosper at. Consider the second verse of the psalm: "his delight is in the law of the Lord, and on his law he meditates day and night". With such wisdom behind his decisions, no man shall fail to succeed at whatever he puts his hand to doing. Indeed, whatever he puts his hand to doing will be a wise choice, matching his God-given strengths and gifts.
Whether it be bringing up children as godly, financial planning for future security of your family, teaching young adults a reasoned view for the existence of God, or caring for your elderly parents; all of these things will propser at your hand. If, that is, you seek God's wisdom and His will.