For decades the Watchtower message has been this: The kingdom of the heavens is closed. You do not belong to Christ, cannot be baptised into Christ, have his spirit nor his mediatorship.
One must cast aside any notion that the NT writings directly apply to you. God's word and spirit are not sufficient to guide and direct christians. Their impotence are manifested by the stressed allegiance and obedience to the 'sole channel' between god and men. Right or wrong, loyalty at all costs.
The NT message of redemption and grace has been so adulterated that it takes mental gymnatics for a witness to explain even the simplicity of Eph.4:4-6. Or re-defining the word 'All' at Matt: 28:18 with the 1914 doctrine to deflect Christs' authority in a christians' life.
Adding the 'dedication vow' as a pre-requisite to baptism despite it's stark absence from the accounts found in the book of Acts has created 6 million people trying to 'live up' to a vow rather than for the one who purchased them.( 2 Cor.5:15).
Allen