2 CORINTHIANS 6:17
"Therefore come out from among them and be separate," says the Lord. "Touch no unclean thing, and I will receive you."
Separate: to set boundaries, to set or place apart
Matthew 25:31-35, 41
When the Son of Man comes in His glory, and all the angels with Him, He will sit on His glorious throne.
All the nations will be gathered before Him, and He will separate the people one from another, as a shepherd separates the sheep from the goats.
He will place the sheep on His right and the goats on His left.
Then the King will say to those on His right, ‘Come, you who are blessed by My Father, inherit the kingdom prepared for you from the foundation of the world.'
Then He will say to those on His left, ‘Depart from Me, you who are cursed, into the eternal fire prepared for the devil and his angels.'
Revelation 18:4
"Then I heard another voice from heaven say: "Come out of her, My people, so that you will not share in her sins or contract any of her plagues."
If we don't separate ourselves now, the LORD God will separate folks later. A conscious decision has to be made to commit one's self to a life lived according to God's will and God's purpose for us.
It is not that we 'cannot' do what we used to do before we got saved, it's that we choose not to do what used to do. Nor do we want to do or be what we got saved from. We want to live a separated life unto God.
Sin separates a person from God. Sin is unholiness. Sin is unrighteousness. Sin is disobedience to God's Word. To die in sin is to be forever, eternally, separated from God. There is no changing one's mind after death. And a person cannot be prayed into heaven by another after death. The decision to follow Christ must be made this side of heaven, this side of eternity, this side of breath.
Today is your day of salvation. Today is the day you give your heart to God. Today is the day you surrender your bodies as living sacrifices to God. Today is your day to believe that JESUS CHRIST IS LORD. Today is your day to be filled with God's Holy Spirit and begin to live a life changed because today is the day you get saved.