Do Not Return

Do not return to the corruptible ways of death from which you were delivered.

Having been born again, not of corruptible seed but incorruptible,

"Since you have purified your souls in obeying the truth through the Spirit in sincere love of the brethren, love one another fervently with a pure heart, having been born again, not of corruptible seed but incorruptible, through the word of God which lives and abides forever, because “All flesh is as grass, And all the glory of man as the flower of the grass. The grass withers, And its flower falls away, But the word of the Lord endures forever.” 

Now this is the word which by the gospel was preached to you.

https://bible.com/bible/114/1pe.1.22-25.NKJV