You just don't have eyes to see.
Bible translations divide on whether to render it "by" one Spirit (instrumental) or "in" one Spirit (locative/sphere), though *both point to the Holy Spirit as the vital agent uniting believers into the body of Christ.*
The Israelites were all baptized into Moses in the cloud and in the sea which means they were united with Moses as their divinely appointed leader when God delivered them through the red Sea and guided them with the pillar of cloud.
Numerous translations say "into" Moses while some say "unto" Moses. Both terms mean that the ancient Israelites were joined to or identified with Moses as their leader. You are the one who needs to wake up!
Numerous translations say "into." Again, both words convey the same core theological idea. The Israelites' complete identification with, submission to, and incorporation under the leadership of Moses during the Exodus.