[HerrBlucher]

As far as I know, there is only one reference to masturbation in the OT and it is not clearly anti masturbation.

[9YearLurker]

That fits with my understanding/recollection as well.

[Senior Chief]

Not to intrude on your tet-a-tet however, Leviticus chapter 15 discusses nothing but uncleanliness due to “bodily discharges”. Matthew chapter 5, verses 27 and 28 point out the consequences of lust as affirmed by James 1:14, 15, Proverbs 6:26, and Job 31:1. Additionally, the story of David and Bathsheba is a living example how those consequences are manifested.