Matthew 27:3-4–Then when Judas, his betrayer, saw that Jesus was condemned, he changed his mind and brought back the thirty pieces of silver to the chief priests and the elders, 4 saying, “I have sinned by betraying innocent blood.” They said, “What is that to us? See to it yourself.”
If I asked you who or what motivates you to do right, would your conscience before God be your answer?  I believe what provokes people to live by faith in all aspects of their lives is not what people think, but what you will think, and decide to live with before God…(1 Timothy 1:18-19)
This is what the apostle Paul was relating to in his own struggle with sin in Romans 7.  To live with the constant presence of evil, while having the holiness of God in us via the Holy Spirit, is enough to go mad!  Yet he summarizes this battle by giving glory to Jesus for the victory!  But what is the victory? (Romans 7:14-25, Romans 8:1-8).
Judas was “comfortable” with eating, sleeping, and living with Jesus for three years, while plotting to betray Him.  Proving never to have God’s heart, but his own agenda.  Ironically, everyone left him, but what stayed was his riddled conscience in betraying the Son of God, which he couldn’t “handle” and hung himself eventually…
To answer what is the victory, the victory is that we don’t have to live with a disturbed conscience before God, because we have been delivered from the power of sin!  Yet, when we do sin and disturb our conscience before God, we are left alone like Judas, and who can care for our conscience more than us?  Through Christ we are blessed enough to repent, if we are honest before God, but Judas didn’t have that luxury…
The challenge for us, is whether we cherish having a clear conscience before God (Acts 24:16)?  If we do, repentance is a big part of that.  Whereas denial and lying against the truth of our conscience, could signify a dead conscience before God, much like Judas (James 3:14-16).  Judas divided his heart from God and the other disciples, because he never cared about his conscience until it was too late…
In His Love, Ld