So all praise to God, the uni-plural ’Elohiym! Everything is from Him, through Him, and unto Him. He created all; and for His pleasure they are; and were created. Genesis 1:1f ; Romans 11:36; Revelation 4:11.
For the God of the Old Testament, Jehovah ’Elohiym, is the Triune God of the New Testament -the Father and the Son and the Holy Spirit. Valid baptism is always into His Name alone. The Post-Christian Judaists, Muslims and Jehovah witnesses have rejected this Triune God — in favour of Unitarianism. They all need to be baptized. The Hindus and the Mormons have rejected this Triune God — in favour of Polytheism. They too all need to be baptized.