Verses to Know When Talking to Jehovah’s Witnesses

The Trinity
Are we required to fully comprehend the Trinity in order to believe it? (Romans 11:33; Isaiah 55:8-9)
There is only one God (Isaiah 43:10-11; 44:8)
There is a plurality in God (Genesis 1:26; 11:7; Isaiah 6:8)
There is a Tri-unity in the Godhead (Matthew 28:18-20)

Jesus is God
Jesus is Jehovah (Hebrews 1:1-10 and Psalm 102)
Jesus is the only true God (John 17:3; 1:1)
Jesus possesses the glory of Jehovah (Isaiah 6:1-3; John 12:38-43; Isaiah 42:8)
Apart from Christ, not one thing has come into existence that has come into existence (This would include himself if he were really a created being; John 1:3)

The Holy Spirit is a person
He has a will (1 Corinthians 12:11)
He has a mind (Romans 8:26-27)
He has emotions (Ephesians 4:30)
He is blasphemed (Matthew 12:32)
He is lied to (Acts 5:3)
He sets Paul and Barnabas apart for himself (Acts 13:2)
Other spiritual beings who are unnamed and can fill other people are treated as persons (Luke 4:31-36)

The Gospel
Romans 3:21-4:8; Romans 8:30; John 6:37-40; Romans 6;1 Corinthians 15:42-44; Philippians3:20-21; Romans 8:22-24; 1 John 3:2; Romans 8:29-30