Talk about Polytheism: I want to overemphasize that Christianity is not polytheistic. Polytheism is a belief in more than one gods. Christianity is a monotheistic religion. Christians believe in one God (Deut 6:4, Isaiah 44:6). Our God has three forms of himself (Father, Son, and Holy Spirit).
Read 1 John 5:1-12…These verses show the connection between all three. “Jesus [God in flesh] is born of God [Our Father in heaven]”..”And it is the Spirit [God in us] who testifies, because the Spirit is the truth”.
Talk about the reasons for the Holy Spirit: With the Holy Spirit, God will reveal himself to us and will live through us.
Talk about the reasons for Jesus: Jesus was needed to fulfill a prophecy of God [Isaiah 53]. God always keeps his promises [Psalm 145:13]. Jesus’s life is fantastic guidelines to live by [1 John 2:6].
Ask about the lesson: Do you now understand the Trinity? Is Christianity Polytheistic or Monotheistic?
Make a last note: Lastly, we must exalt God far above us and live as Jesus did through the Holy Spirit that has been given to us.