No direct command
Scripture does not specifically name masturbation or give a direct command about it. The account of Onan is sometimes brought into this conversation, but its concern is not masturbation. Onan refused his family duty to provide an heir for his deceased brother, while still taking the sexual benefits of the marriage arrangement, as Genesis 38:7-9 explains.
Because the Bible does not address the act directly, it is wise to be humble. Rather than relying on assumptions or shame, Christians can look at the wider biblical teaching about the heart, the body, relationships, and freedom.
Sexual desire and lust are not identical
Sexual desire itself is part of being human. Feeling desire, including unwanted or strong desire, does not by itself mean someone has sinned. Jesus does teach that deliberately looking at another person in order to cultivate lust is a matter of the heart, not merely outward behaviour, as Matthew 5:28 shows.
For many people, masturbation is connected with pornography, fantasy about a real person, or viewing people as objects for private pleasure. Those connections matter. A helpful question is whether this pattern is leading you to honour others as people made by God, or training your mind to use them.
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Ask whether it is controlling you
Paul teaches that even things that may be allowed are not always helpful, and that he does not want to be mastered by anything, as 1 Corinthians 6:12 says. This principle can help with habits that are not directly named in Scripture.
Consider whether the behaviour is occasional and freely chosen, or whether it feels compulsive, secretive, and difficult to stop. If it regularly leads to pornography, disrupts sleep or relationships, or becomes a main way to escape loneliness, stress, or pain, it may be a sign that you need support rather than more self-condemnation.
All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any.
Respond with honesty and grace
Christians may reach different conclusions where the Bible has not given a direct command. Still, it is not healthy to repeatedly act against a conscience that is troubled. Bring the question openly to God in prayer, read the relevant passages in context, and consider whether this choice helps you grow in love, integrity, and self-control.
If lust, pornography, deception, or a controlling habit has become part of the picture, forgiveness and change are possible. God welcomes honest confession and promises cleansing to those who come to him, as 1 John 1:9 teaches. It can also help to speak with a trusted pastor, mature Christian friend, counsellor, or health professional. You do not have to face a difficult pattern alone.
If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.