Lamb of God (Agnus Dei): Meaning, Words in Latin and English, and Its Place in the Mass
What "Lamb of God" means in the Bible and the Mass: the Agnus Dei in Latin and English, the Passover lamb, "Behold the Lamb of God," and why Jesus is the Lamb.
What Is a Homily? Meaning, Who Gives It, and How It Differs from a Sermon
What a homily is at Catholic Mass: its meaning, who may preach it, when it is required, how long it should be, how it differs from a sermon, and how to listen well.
The Penitential Act at Mass: Its Three Forms, the Kyrie, and What It Does
The Penitential Act at Catholic Mass: its three forms (Confiteor, short dialogue, invocations), the Kyrie, the sprinkling rite, and what it forgives.
The Liturgy of the Word at Mass: Readings, Psalm, Gospel, Homily and Prayers
The Liturgy of the Word at Mass in order: first reading, psalm, second reading, Gospel acclamation, Gospel, homily, Creed and Prayers of the Faithful.