John Wesley on 2 Peter 1:10

Wherefore - Considering the miserable state of these apostates. Brethren - St. Peter nowhere uses this appellation in either of his epistles, but in this important exhortation. Be the more diligent - By courage, knowledge, temperance, &c. To make your calling and election firm - God hath called you by his word and his Spirit; he hath elected you, separated you from the world, through sanctification of the Spirit. O cast not away these inestimable benefits! If ye are thus diligent to make your election firm, ye shall never finally fall.