Christ instituted the sacraments of the new law.

There are seven: Baptism, Confirmation, Eucharist, Penance, Anointing of the Sick, Holy Orders and Matrimony. 

The seven sacraments touch all the stages and important moments of Christian life:  they give birth and increase healing and mission to the Christian’s life of faith. 

There is thus a certain resemblance to the stages if natural life and the stages of spiritual life. Catechism of the Catholic Church 1210