That mistake started with Peter's error, that he later corrected.
Many miss when Peter realized his mistake.
Here is some background as to why Peter began immediately commanding water baptism.
Now Jesus learned that the Pharisees had heard that he was gaining
and baptizing more disciples than John— although in fact it was not
Jesus who baptized, but his disciples. John 4:1-2
Now that was a lot of water baptizing going on by Peter and the disciples!
It became a way of life for Peter.
So?
He simply continued ordering water baptizing thousands of people.
He continued with water until the moment he recalled the following words of Jesus spoken soon after his resurrection...
On one occasion, while he was eating with them, he gave them this command:
“Do not leave Jerusalem, but wait for the gift my Father promised, which you have
heard me speak about.
For John baptized with water, but in a few days you will be baptized with the Holy Spirit.” Acts 1:4-5
In all the bombardment of excitement Peter was experiencing since seeing the risen Christ,
Peter simply was highly distracted and simply forgot what Jesus had said.
Then around the time of Acts 10 and 11, it finally hit home with Peter.
“As I began to speak, the Holy Spirit came on them as he had come on us at the beginning.
Then I remembered what the Lord had said: ‘John baptized with water, but you will be baptized
with the Holy Spirit.’ Acts 11:15-16
Then - Acts 11! Peter remembered!
Not before!
In Acts 2 Peter was instantly overwhelmed in certain ways.
Peter finally remembered the Lord's words. But, only after having commanded thousands of water baptisms for many newly saved souls.
That is why we experience the confusion like we see today concerning water baptism.
Too many Christians are failing to see how Peter was setting out into a new and unexplored spiritual frontier.
A frontier that needed the chosen explorers to learn and make adjustments from time to time.
I pray that helps someone.
Grace and peace .........