"Your clothes did not wear out and your feet did not swell during these forty years"-Deuteronomy 8:4 (NIV).

It was a four-decade long test, through desert heat, rocky terrain, venomous snakes and scorpions and homelessness...God tested the Israelites (v.2;16).  The correct response was to seek God and not worry about clothing, food, water, nor any other physical comfort...God would and did provide.  Jesus reviewed and reiterated that our lives are more than food and our bodies more than clothing (Matthew 6:25).  Look at the birds (v.26) and flowers (v.28).  Creation testifies to God's provision.  The correct response to the test is still the same; seek God...His kingdom and His righteousness (v.33)...and don't worry about your needs.  How well do you test...do you rely on God or your own efforts?