The question of whether it is a sin in Christianity to say that Jesus had OCD is not explicitly addressed in the Bible because Obsessive-Compulsive Disorder (OCD) is a modern medical term that describes a specific mental health condition. The Bible does not diagnose historical figures with specific modern mental health disorders.
However, it's essential to understand that religious beliefs and interpretations can vary among different Christian denominations and individuals. Some Christians may feel uncomfortable or find it inappropriate to assign modern psychological terms or mental health conditions to figures from the Bible, including Jesus, as they view them as more spiritual or divine in nature.
Ascribing human conditions or attributes to Jesus, including psychological conditions, can be a sensitive topic within Christianity. Some Christians emphasize the belief in Jesus' divinity and sinlessness, which could influence their perspective on such matters.
If you're considering discussing or exploring this topic within a Christian context, it's essential to approach the conversation with sensitivity and respect for varying beliefs. Different individuals and denominations may have different views, so open dialogue and understanding are vital when discussing matters related to faith and mental health. If you have questions about Christian beliefs and interpretations, it may be helpful to consult with a knowledgeable religious leader or pastor.