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 3:1-2

The False Teachers’ Denial of the Lord’s Return

3:1 Dear friends, this is already the second letter I have written you, in which I am trying to stir up your pure mind by way of reminder: 3:2 I want you to recall both the predictions foretold by the holy prophets and the commandment of the Lord and Savior through your apostles.