In Scripture, we have the 7 sacraments.
1. The Eucharist Instituted by Christ himself
2. Baptism, which Jesus said was necessary
3. Laying on of hands, or Confirmation, which
the Apostles said was necessary, for those
only Baptized according to John the Baptist.
4. Marriage, which was part of the Jewish tradition
as well as the early Church. Jesus said, God created
man and woman and the two became one.
5. Confession. "Confess your sins to one another."
In the Early Church, confession was done before
the Congregation. In fact, private confession before
a priest was prohibited. That changed when the Church
was persecuted in Ireland and the clergy were ordered to
remain inside monastery walls. So, they made small rooms
along the outside wall of the monastery with a window that
opened to the priest on the other side. The penitent confessed
their sins and received spiritual direction from the priest. It was
so well accepted, that it ended up as the norm in the Church.
6. Anointing of the Sick. Jesus and the Apostles anointed the sick
in their ministry, often healing them, or giving them a final
blessing. This was also in Judaism during Christ time.
7. Ordination. Bishops, priests and deacons were ordained in
the Church. The Acts of the Apostles and St Paul's epistles
confirm this, as well as the writings of St Ignatius of Antioch
and St Polycarp, who were believed to be the auditors of
St John's Gospel.