1 Peter 1:15-16

But just as he who called you is holy, so be holy in all you do; for it is written: "Be holy, because I am holy." 

so be holy in all you do 
Isaiah 35:8  And a highway will be there; it will be called the Way of Holiness; it will be for those who walk on that way. The unclean will not journey on it; wicked fools will not go about on it.
1 Thessalonians 4:7  For God did not call us to be impure, but to live a holy life.
1 John 3:2-3  Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when Christ appears, we shall be like him, for we shall see him as he is. All who have this hope in him purify themselves, just as he is pure.

"Be holy because I am holy." 
Leviticus 11:44-45  " 'I am the LORD your God; consecrate yourselves and be holy, because I am holy. Do not make yourselves unclean by any creature that moves along the ground. I am the LORD, who brought you up out of Egypt to be your God; therefore be holy, because I am holy.' "
Leviticus 19:1-2  The LORD said to Moses, "Speak to the entire assembly of Israel and say to them: 'Be holy because I, the LORD your God, am holy.' "
Leviticus 20:7  " 'Consecrate yourselves and be holy, because I am the LORD your God.' "
Ephesians 1:4  For he chose us in him before the creation of the world to be holy and blameless in his sight.
Romans 6:22-23  But now that you have been set free from sin and have become slaves of God, the benefit you reap leads to holiness, and the result is eternal life. For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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