It is necessary for Yeshua to be a blood descendant of Israel, according to Torah, in order for Yeshua to be Kinsman-Redeemer for all of Israel (Lev. 25:25).
John was apparently told by Elohim to go forth and baptize people with water. When John comes across One who has the Spirit descend upon Him and remaining on Him, he will know that this is the One who will baptize with the Holy Spirit.
The baptism of the Holy Spirit in when the Spirit (or Breath) of Elohim is inside an individual and the heart of that person turns toward Elohim and His Torah,. It is the baptism of the Holy Spirit that cleanses one of sin and makes them a part of the New Covenant (Titus 3:5-6, 1 Cor. 12:13, Acts 11:15-16).
There is continual testimony for all of us to see regarding both the curse on the ground and the judgment of the flood. The testimony of the curse is found in the structure of the basic laws of science, which are the laws of thermodynamics.