Therefore prepare your minds for action; discipline yourselves; set all your hope on the grace that Jesus Christ will bring you when he is revealed. Like obedient children, do not be conformed to the desires that you formerly had in ignorance. Instead, as he who called you is holy, be holy yourselves in all your conduct; for it is written, “You shall be holy, for I am holy.” (1 Peter 1:13-16, NRSV)
God has called us to holy. As He is holy so we should be holy.
And He is asking us or calling us to be like Him.
We can allow the fullness of His grace to complete the work that He began in us and make us just like Him.
He will make us holy if we only let Him.
So be holy like He is holy.