Catholics refer to canonization as a declaration that the universal/global Catholic faithful may venerate a particular deceased member of the church.
In contemporary usage, the term is understood to refer to the act by which any Christian church declares that a person who has died is a saint, upon which declaration the person is included in the list of recognized saints, called the “canon”.
In the Catholic Church, canonization is a decree that allows universal veneration of the saint in the liturgy of the Roman Rite. For permission to venerate merely locally, only beatification is needed.
According to the Bible those that are saved by the blood of Jesus are called saints.
1 Corinthians 1:2 To the church of God that is in Corinth, to those sanctified in Christ Jesus, called to be saints together with all those who in every place call upon the name of our Lord Jesus Christ, both their Lord and ours: