The secret of Christian joy is to believe what God says in His Word and act upon it.  Faith that isn’t based on the Word is not faith at all; it is presumption or superstition.  Joy that isn’t the result of faith is not joy at all; it is only a ‘good feeling’ that will soon disappear.  Faith based on the Word will produce joy that will weather the storms of life.

Warren W. Wiersbe, Be Determined (Colorado Springs, CO: ChariotVictor Publishing, 1992), 101.