So teach us to number our days, that we may gain a heart of wisdom. Psalm 90:12

Instinctively, all men know that their most precious gift is time. How we use, spend, or waste 'our' time is one of the truest measures of what we value. 'Our' time is defined as the discretionary minutes and hours that are free from the reasonable obligations and duties of life.

A human is an efficient organism. It measures and marshals it's resources according to a hierarchy of needs and desires. Simply stated, what the human determines is most needed and desired gets the most precious resources.

So, if a man presents himself as a Christian, e.g., a devoted servant of the Master of Life, his use of his discretionary time will clearly confirm this.

If it does not, pay him no mind. He is merely a pretender. (Star Wars: "Move along, there's nothing for you here.")