"[J]ustified freely by his grace"

In Romans 3:22 -24, we read that if we have faith in the Savior and repent of our sins, then we can receive salvation through His Atonement. We are "justified freely by his grace through the redemption that is in Christ Jesus" (Romans 3:24). In the Church of Jesus Christ of Latter-Day Saints, grace is often referred to as the power of the Atonement of Christ and to be justified is to be made righteous. What would your life be like without the Atonement of Jesus Christ?

As I’ve studied the New Testament, I’ve noticed how little the Atonement of Jesus Christ is mentioned. In fact, the word atonement or atone in any form is only mentioned once in all the New Testament. But, this essential part of the Plan of Salvation makes the rest of the plan possible. We all sin and we all struggle with the trials of life, so we all need the power of the Atonement of Jesus Christ in our lives.

How can we receive this power in our lives? President Russell M. Nelson states:

     When you reach up for the Lord’s power in your life with the same intensity that a drowning person has when grasping and gasping for air, power from Jesus Christ will be yours. When the Savior knows you truly want to reach up to Him—when He can feel that the greatest desire of your heart is to draw His power into your life—you will be led by the Holy Ghost to know exactly what you should do. When you spiritually stretch beyond anything you have ever done before, then His power will flow into you.

Most often I have felt this power come through the gift and power of the Holy Ghost. When I feel hopeless and discouraged or completely overwhelmed, I reach out to the Savior for help. He has helped me and strengthened me by bringing to my mind a scripture, a hymn, or a conference talk that I need to hear for comfort or direction.

Reference: https://www.lds.org/general-conference/2017/04/drawing-the-power-of-jesus-christ-into-our-lives?lang=eng