God's command to "pray without ceasing" is founded on the necessity we have of His grace to preserve the life of God in the soul, which can no more subsist one moment without it, than the body can without air.
John WesleyWhen I was young I was sure of everything; in a few years, having been mistaken a thousand times, I was not half so sure of most things as I was before; at present, I am hardly sure of anything but what God has revealed to me.
John Wesley