2 Peter 1:10

1:10 Therefore, brothers and sisters, make every effort to be sure of your calling and election. For by doing this you will never stumble into sin.

2 Peter 1:19

1:19 Moreover, we possess the prophetic word as an altogether reliable thing. You do well if you pay attention to this as you would to a light shining in a murky place, until the day dawns and the morning star rises in your hearts.