Two main sacraments
Baptism and the Lord's Supper are normally recognized as central sacraments or ordinances.
What it is: Most Protestant traditions recognize baptism and the Lord's Supper as the two central rites instituted by Christ.
How the religion understands it: Some traditions prefer to call them sacraments; others, ordinances. In general, the other Christian rites do not receive the same sacramental status as in the Catholic and Orthodox traditions.
Context: The reduction of the sacramental number is an important historical feature of the Reformation, although the language and theology of these rites vary considerably among denominations.
Supportive
1 Corinthians 11:23-26
Tradition of the Lord's Supper.
Reference: 1 Corinthians 11:23-26.
Content: Paul transmits the tradition of the supper and its memorial repetition until the Lord's return.
Use in debate: It is central to the various Protestant readings of the supper.
Matthew 28:19-20
Mandate to baptize and teach.
Reference: Matthew 28:19-20.
Content: Jesus sends disciples to baptize and teach all nations.
Use in debate: It is a basis both for baptism and for mission and discipleship.
Thirty-Nine Articles, Article 25
Classic Anglican text on two sacraments of the Gospel.
Reference: Thirty-Nine Articles, Article 25.
Content: The article distinguishes baptism and the Lord's Supper as sacraments of the Gospel in the proper sense.
Use in debate: It is frequently cited in Protestant discussions about the number of sacraments.
Contrary
Catechism of the Catholic Church 1113-1131
Catechetical synthesis on the nature and number of the sacraments.