Is Acts the only book in the Bible?
Is everything that happened recorded in the NT?
Yes, that was the difference between John's baptism and gospel baptism.
John's baptism was a baptism only of repentance, it was not a baptism in the name of,
nor of faith in Christ Jesus.
However, Jesus' baptism was a baptism in the name of the Triune God who saves,
the Father decreeing salvation by forgiveness of sin (Lk 1:77),
the Son effecting salvation on the cross (Ro 3:25), and
the Holy Spirit applying salvation in the new birth (Jn 3:5).
Is everything that happened recorded in the NT?
Yes, that was the difference between John's baptism and gospel baptism.
John's baptism was a baptism only of repentance, it was not a baptism in the name of,
nor of faith in Christ Jesus.
However, Jesus' baptism was a baptism in the name of the Triune God who saves,
the Father decreeing salvation by forgiveness of sin (Lk 1:77),
the Son effecting salvation on the cross (Ro 3:25), and
the Holy Spirit applying salvation in the new birth (Jn 3:5).
Salvation do not rest on that belief or understanding. If it is "revealed" I´m open to hear God, not the RCC teachings.