Paul says in 2 Corinthians 12:9 (ESV)  

But He said to me, “My grace is sufficient for you, for My power is made perfect in weakness.” Therefore I will boast all the more gladly of my weaknesses, so that the power of Christ may rest upon me. 

Just enough grace for today is a good reminder not to worry about tomorrow! Matthew 6:34 (ESV)

Therefore do not be anxious about tomorrow, for tomorrow will be anxious for itself. Sufficient for the day is its own trouble.

5" square glass tray also available as a 5" desk plaque. 

Decorative Use. Not for food