v22: Practice - obedience to the truth>deep love = practising deeply from the heart
v23: Perspective - living and enduring Word of God = Delight in the Word of God; read and apply
v24-25: Permanence - future assurance = Remember - this counts for eternity
22 Having purified your souls by your obedience to the truth for a sincere brotherly love, love one another earnestly from a pure heart, 23 since you have been born again, not of perishable seed but of imperishable, through the living and abiding word of God; 24 for
“All flesh is like grass
and all its glory like the flower of grass.
The grass withers,
and the flower falls,
25 but the word of the Lord remains forever.”
And this word is the good news that was preached to you.
(ESV)