How to stump a Jehovah Witness on Jesus being God Almighty

In this video I will touch on some feedback from my John 17:3 video the only true God. Concerning Jesus being God Almighty I am aware of Jesus being called the mighty God in Isa. 9:6. Yet a Jehovah Witness will then say but Jesus is not God Almighty. I have heard various arguments to prove that Jesus is God Almighty. The arguments presented are solid and sound. Yet I want to throw in a new argument in order to stump a Jehovah Witness that will cause them to think outside of the watchtower and maybe just maybe allow the word of God to guide them. Text on the stump argument Matthew 18:20 (KJV) 20 For where two or three are gathered together in my name, there am I in the midst of them.