William Burkitt on 2 Peter 1:10

As if our apostle had said, "See that in the diligent exercise of the afore-named graces, and in the daily practice of the afore-mentioned duties, you make your calling and election, which are sure in themselves, sure to you; for so doing, you shall never fall or miscarry eternally."

Here note, That it is their own calling and election which Christians are called upon to make sure, not another's; we must leave their case and state to God that searches the heart; we cannot know the hearts of others, it is well if we know our own: Make your calling and election sure.

Learn, 1. A Christian may be assured of his own salvation. 2. Assurance of salvation requires all diligence. 3. That assurance of salvation deserves all diligence. 4. That the way to make our election sure, is first to make our calling sure.