Heaven is a holy place. The Lord of heaven is a holy being. The angels are holy creatures. Holiness is written on everything in heaven…..suppose for a moment that you were allowed to enter heaven without holiness. What would you do?
What possible enjoyment could you feel there? To which of the saints would you join yourself, and by whose side would you sit down? Their pleasures are not your pleasures, their tastes not your tastes, their character not your character. How could you possibly be happy, if you had not been holy on earth?
– JC Ryle
It is preferring. To choose is to prefer one thing over another thing. If God is to get the glory in our choosing against sin, it must be because we regard God and what He is and promises as preferable.
Choosing is finding one thing preferable to another thing. So you can describe the battle at this point in negative terms: Say no to the Judas-desires of sin on the basis of what God has done and who you are in Christ. You are dead to sin and its desires; they do not look preferable. Or you can describe the battle positively: When sin sends in his Judas-desires to tempt you, prefer God and his work and his ways and promises. See God as preferable to the fleeting pleasures of sin. You are alive to God and He looks preferable. If Satan attacks with deceitful desires, counter with reliable desires that will not let you down, and that lead to everlasting joy.
– John Piper