This is the second time we encounter this word "wherefore." Peter again uses it to introduce an admonition. He is concerned about how these folks are living in this time of struggle, strife and suffering. He's trying to give them inducements or reasons to maintain a holy life in the midst of trial. Reminding them of the exalted position they enjoy as the ransomed of God redeemed by the blood of Christ, the apostles says casta side those old garments of sin and clothe yourselves with the holiness which such a station demands.