Every professing Christian should read today’s passage as a warning. All who are truly in Christ, of course, cannot finally fall away from grace, but only those who bear fruit for the kingdom are truly in Christ. Believers may vary in the amount of fruit they produce, but there is no such thing as a fruitless believer. Consider this day the fruit you are producing in the form of good works of service, progress in sanctification, discipleship, and other such things.
For further study:
The Bible in a year: