Luke 6:38 Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.
In the market place of the Bible lands a good merchant would provide the buyer with a "good measure." People would bring a container to the market to buy grain and the merchant would fill their cup, press it down, shake it together, and fill it again until it was running over. God's Word promises that when we give God will bless us back abundantly with a "good measure."