His grace (grace - an undeserved favor), with all due respect, is one of the hardest things to understand. Actually, I don't think anyone understands the meaning of this word, grace. We can, however, see the results of it. Let me share a few Bible verses that show us the results of His grace. 

 2 Corinthians 5:17 Therefore, if anyone is in Christ, the new creation has come: The old has gone, the new is here!

 Isaiah 55:1 

Come, all you who are thirsty, come to the waters' and you who have no money, come, buy and eat! Come, buy wine and milk without money and without cost.

 Isaiah 55:10-11

As the rain and the snow come down from heaven, and do not return to it without watering the earth and making it bud and flourish, so that it yields seed for the sewer and bread for the eater, so it is my word that goes out from my mouth: it will not return to me empty, but will accomplish what I desire and achieve the purpose for which I sent it. 

 Isaiah 55:13

Instead of the thorn bush will grow the juniper, and instead of briers a myrtle will grow.

2 Corinthians 5:17 says, that everyone benefits from His sacrifice, all by grace ( for free!). This means that there is not one single thing you can do to earn heaven or the undeserved favor of God. and Isaiah 55:10-11 says that like He sends the snow and rain with purpose to water the earth and it reproduces for our benefit to do what He wants it to do. What is it that He wants to do with His word? He wants it to transform us and we see this answer in verse 13, "instead of the thorn bush will grow juniper." This means without Christ we are thorn bushes or briers and with Christ we are junipers or myrtle. The junipers produce such amazing shade that everyone wants to be underneath it but no one wants to lay under a thorn bush. Grace is at your door and wants to make you a new creature. All you have to do is accept it.