It is obvious that the saved youth who has encountered the Lord in the way described above must appreciate the experience and jealously guard it from whatsoever can contaminate it (cons. Matt.13:24-28). Putting a difference begins as one identifies whatsoever that defiles and contradicts holy living and flee it even if it be something that is popularly accepted and esteemed by every other youth including those who claim to be born again.
Some of the things a Christian youth must identify as unholy are obtainable among youths include: youthful lust, negative peer pressure, love for the world (lust of the flesh, lust of the eyes, pride of life), ungodly ambition, carnal affection and friendship with the world, immoral acts and thoughts, cheap Christianity, pursuit for inconvenient pleasures, etc. (2 Timothy 2:19,22; 3:1-5; 1 John 2:15-17; Proverbs 1:10-15; Romans 8:5-13; Ephesians 5:3-7; 4:29,30,31). These contend with holiness and defile and so the Christian youth has been commanded to ESCHEW and FLEE them. This is what putting a difference between the holy and unholy means.
As you obey the command to flee everything unholy, you are to cleave to all that will consolidate your righteousness in God such as consistent study of God’s word, regular interaction with God, His Spirit and His people in prayer and fellowship, consecration, setting your affections on heavenly things, and meditating on things that are right, etc. (cons. Colossians 3:1,2.16; Hebrews 10:25; Philippians 4:8). Youths who engage in this stand out among other Christians. They are epitomes of good works which reflect in their emotional, academic, business and social interactions (1 Timothy 4:12).
Today, if you must be able to obey the injunction of the Lord on putting the difference between the holy and unholy, you must surrender your heart to him for circumcision/sanctification then you will be able to identify holy and unholy things and flee the unholy and cleave the holy. As you do so, you will become the Lord’s peculiar treasure and holy nation (Exosua 19:5,6; 1 Peter 2:9).
You have an opportunity this day to experience the work of the Spirit of God on your soul through sanctification and receive the grace and strength to put a difference between the holy and unholy.