Masturbation is sin in the eyes of a Holy, Righteous and Just God who is without sin.
In the eyes of a Holy God... sin = sin. There isn't one greater than another. All sin = sin. And God cannot commune/fellowship with those who commit "willful" sin.
The word Christian means, "Christ-like." Therefore, anyone who professes to be a Christian, demonstrates who they are in Christ by their, "lifestyle...like Christ.
The Holy Spirit is the only One...who can give those who belong to Christ the power to "overcome" willful sin.
Our eyes are like cameras. We take pictures with our eyes and then those images are stored in our database in our brain. We are to control our flesh through the power of the Holy Spirit. We are not to allow our flesh to control us. We are to decrease, so that Christ in us will increase.
And let me just add, masturbation is "selfish." God created man and woman to become as "one" (in marriage). Masturbation has been proven to ruin sexual relationships. Why? Because...
1. There is fantasy involved which can and will interfere with a normal relationship.
2. The person is satisfying their 'own' desires.
3. The mental images are a constant reminder of self gratification.
4. They are not able to have a "healthy" sexual relationship because their partner is not able to satisfy them the way they do with their self.
Remember, God's Word is His "Spiritual" Instruction manual for man to live a safe, abundant life in Him. God gives us a standard in which we are to live.
Years ago, my pastor came incorporated what he called, "The 6 T List." It was composed using Philippians 4:8-9. Whatever things are true, honest, just, pure, lovely and of good report. THINK on these things...and DO...and the God of peace will be with you.
So then, "think" out these questions:
Whatever things are....
True....Is it the Godly norm?
Honest...Is it worthy of respect?
Just...Does it conform to holiness?
Pure....Could it corrupt spirituality?
Lovely....Would Jesus embrace it?
Good Report...Would it attract others to Christ?
Christians have a big responsibility. We are to be the "light" and allow our lifestyle to attract others to Christ. Think about that.
You need to stay away from things that tempt you, and then ask the Holy Spirit (for He is "all" Power) to "keep" (protect) you from committing willful sin.