Philippians 3:17-21; NKJV
17 Brethren, join in following my example, and note those who so walk, as you have us for a pattern.
18 For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ:
19 whose end is destruction, whose god is their belly, and whose glory is in their shame — who set their mind on earthly things.
20 For our citizenship is in heaven, from which we also eagerly wait for the Savior, the Lord Jesus Christ,
21 who will transform our lowly body that it may be conformed to His glorious body, according to the working by which He is able even to subdue all things to Himself.
Not everyone is receptive to the gospel of Christ. There are "enemies of the cross of Christ," folks who are actively hostile (Strong's). They live lives that are in opposition to the walk of disciples of Christ. They set their minds on earthly things, their glory is their shame, their end is destruction.
Let us follow the pattern of men like the Apostle Paul and walk in the footsteps of Jesus. How we live determines whether we are His friends or His enemies. "As you therefore have received Christ Jesus the Lord, so walk in Him" (Colossians 2:6; NKJV).