ISB ~ 2 Peter 1 v10

your call and election:Believers are chosen and called by God to be his own people in Christ (1 Pet 2:9). This status is maintained and confirmed by living the faith and attaining the virtues of gospel morality outlined in 2 Pet 1:5-7. It is jeopardized, however, if one becomes reentangled in a life of sin (2:20-22). The danger that one might fall shows that confirming one’s election is a matter of real and crucial importance, i.e., it cannot be reduced to a merely subjective or personal reassurance that one’s salvation has already been eternally secured.