“Pray without ceasing.” (1 Thessalonians 5:17)
This is, no doubt, the shortest commandment in the Bible, and seemingly the most difficult to obey. How could anyone possibly pray without ceasing? What about sleeping, or working, or other necessary pursuits?
Paul himself claimed to pray without ceasing. For example, he wrote to the Roman church: “For God is my witness…that without ceasing I make mention of you always in my prayers” (Romans 1:9). To the Thessalonians he wrote: “We give thanks to God always for you all, making mention of you in our prayers; Remembering without ceasing your work of faith” (1 Thessalonians 1:2-3). In his very last epistle he wrote: “I thank God…that without ceasing I have remembrance of thee in my prayers night and day” (2 Timothy 1:3).
It is obvious from such references that Paul did not mean we should be uttering prayers continually but rather to be continually in a prayerful attitude and never to stop the regular practice of prayer. In like fashion, the Lord Jesus said: “Men ought always to pray, and not to faint” (Luke 18:1). In the parable following this command, He spoke of God’s “own elect, which cry day and night unto him” (Luke 18:7). This would further imply that our prayerful attitude and regular practice of specific prayer should be taking place every day and every night. We should never “faint”—that is, “lose heart”—if the answer isn’t what or when we hope, but keep on praying anyway. When it’s the right time, He will, indeed, answer “speedily,” and in the right way (Luke 18:8).
To pray without ceasing means simply to be free to communicate quickly with Him, night and day, always in an attitude of prayer. “If ye abide in me,” He said, “and my words abide in you, ye shall ask what ye will, and it shall be done unto you” (John 15:7). HMM
From Days of Praise