To answer “what grace does do” we have to go back to its definition. In the definition of grace we see it described as being manifested through the salvation of sinners. To understand grace more we need to have a deeper understanding of salvation.

Salvation means the “preservation or deliverance from harm, ruin, or loss.” Now with just this definition we see that grace preserves us from the harm, ruin, and loss that sin brings, but we can go even deeper by looking at the definition preservation.

Preservation is “the act, process, of keeping something valued alive, intact, or free from decay”. Now we can see deeper into what grace does and not only that but that it is given unto us because we are seen as valuable

And we can confirm this with the word, take a moment to turn to and read Titus 2:11-14. In these scriptures we are told that grace brings salvation, we also see that salvation teaches us to deny ungodliness and worldly lust and that doing this is what will persevere and keep us from the decay of sin.