We live in a time when many folks have placed a high priority on physical fitness. How many do you know who have a “gym membership” or maybe a “home gym“? In some school systems, they had 
taken “gym class” out of the schedule, but now they’re bringing it back. Of course, in schools, “gym class” is often held in the gymnasium. What does this have to do with us?
Our English word “gymnasium” comes from the Greek word gumnasia and its corresponding verb gumnazo. The noun is found once and the verb is found four times in the Greek New Testament. English versions translate it as “exercise” (NKJV), “discipline” (NASB), “training” (ESV). The spiritually-fit Christian, according to God’s workout regimen, is to exercise himself “toward godliness” (1 Tim. 4:7), training his senses “to discern good and evil (Heb. 5:14), in order that the discipline might yield “the peaceful fruit of righteousness” (Heb. 12:11).
Are you working out your senses toward godliness? Are you exercising in God’s gym?