the Lord Jesus is the source of grace and peace

to all who are beloved of God in Rome, called as saints: Grace to you and peace from God our Father and the Lord Jesus Christ.Rom 1:7

All believers are "dearly loved by God" with a special love 

John 13:1 Now before the Feast of the Passover, Jesus knowing that His hour had come that He would depart out of this world to the Father, having loved His own who were in the world, He loved them to the end.

"Saints" literally means 'HOLY ONES" and all believers in Christ are such.

According to Bible "saints" are not some exceptionally holy or dedicated successful believers, but all believers without exception.

They are to live holy lives because they are holy people and belong to Jesus Christ the Holy one.

"Grace" and "Peace" are two fo the great words of the gospel of Christ. 

Grace saves believers and keeps them and supplies freely all they need for a life of holiness, usefulness and godliness.

We cam never deserve God's grace.

Grace means God's favor to those who are nor worthy of it, who can never earn it.

peace here means the rest of heart, the peace of mind that Christ gives

(Matt 11:28-30 "Come to Me, all who are weary and heavy-laden, and I will give you rest."Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and YOU WILL FIND REST FOR YOUR SOULS."For My yoke is easy and My burden is light.")

John 14:27 Peace I leave with you; My peace I give to you; not as the world gives do I give to you. Do not let your heart be troubled, nor let it be fearful.

It is result of being rightly related to God.

That the Lord Jesus is the source of grace and peace just as God the Father is.

This is true because He shares God's nature.

Phil 2:6 who, although He existed in the form of God, did not regard equality with God a thing to be grasped,

Luke 2:11 for today in the city of David there has been born for you a Savior, who is Christ the Lord.