The writer here sounds a warning concerning a possibility that many religious people today deny. It is possible for a Christian to sufficiently lose his faith in God as to be described as departing from Him. This warning (and the very need for it) denies the Calvinists view that a child of God cannot sin as to be lost. The Hebrew writer says he can, and the warning indicates that some do!
So, how do we avoid losing our faith? “Beware!” The first step is to acknowledge the possibility. “Exhort one another daily.” This phrase points out the important responsibility each Christian has to edify and encourage his brothers and sisters in Christ. (See also Hebrews 10:24-25 to note the importance of our assemblies in delivering such exhortations). “While it is called ‘Today’” indicates an urgency the writer wishes to impart to his exhortation.
Steadfastness is necessary to enjoy the fruits of being “partakers of Christ.” Only those who continue their faithful service to God “to the end” will enjoy the fruits of their labor.
