First John 2:1 states that if we sin, we have an ________ with the Father.

The correct answer is "Advocate" because 1 John 2:1 emphasizes the concept of Jesus as our advocate before the Father when we sin. An advocate is someone who pleads on behalf of another, and in this context, it signifies that Jesus intercedes for us. This understanding highlights the assurance that, although we are prone to sin, we have support and representation in the presence of God, enabling us to receive forgiveness and restoration.

The term "intercessor" is closely related but is not the specific word used in this scripture. While all of the other terms could imply a form of support or guidance, "advocate" most accurately captures the legal and relational context in which Jesus stands before God on our behalf, reinforcing the idea of a protective and defending role in the spiritual realm.