Let’s break it down!
To answer this question, we first need to understand that, according to Catholic Tradition and teaching, there are two types of grace: Sanctifying Grace and Actual Grace.
Let’s begin with Sanctifying Grace since that one technically happens first.
To sanctify means to be made holy. And the word grace is defined as the free and undeserved gift from God.
I once had a dear Protestant friend tell me that she had never seen an infant baptism and asked me what it was like. At the time, I didn’t know how to answer her — I thought all babies were baptized.
However, I now understand that the primary difference between the Catholic understanding of Baptism and the Protestant understanding lies in the supernatural change that occurs during the sacrament.
All human beings are born in the image and likeness of God, but because of the Fall (Adam and Eve in the Garden, the apple … you may be familiar with the story), we are born with original sin.
This sin is not of our doing, but is actually Adam and Eve’s fault! Because they are our ancestors, we are born with sin.
And this is exactly why Catholics baptize infants! During the sacrament of Baptism, sin is literally wiped away. Further, the infant is infused with Sanctifying Grace.
This supernatural transformation of the infant’s soul makes him or her a child of God, which will then provide him or her with the foundation to receive Actual Grace as he grows in age and wisdom.
Which leads us to the second type of grace that occurs in a child of God, or a Baptized person — Actual Grace.
Have you ever felt that nudge to push you to do something outside your comfort zone to benefit someone else?
Maybe you’re in a hurry and notice a little elderly woman struggling to put groceries in her car. Though it may make you late, you decide to stop to help the woman. Something inside of you urges you to put your own needs aside and put those of someone else first.
Maybe you’re drinking your coffee in the morning, and instead of scrolling Facebook, you feel a strong desire to say a prayer for someone in need.
These are examples of God’s grace working inside of you — also known as Actual Grace. It comes from outside of you (God) and causes you to act in a way that is pleasing to Him.
Sources
https://www.catholic.com/tract/grace-what-it-is-and-what-it-does