Romans 5:1-2

THEREFORE, SINCE we are justified (acquitted, declared righteous, and given a right standing with God) through faith, let us [grasp the fact that we] have [the peace of reconciliation to hold and to enjoy] peace with God through our Lord Jesus Christ (the Messiah, the Anointed One).

We are justified through faith and the glorious Truth for us is that we now have Jesus Authoring and Finishing our faith, Hebrews 12:2. We are in right standing with our Father and we will always be in right standing with Him because our Lord and Savior ever lives to insure that we are, Hebrews 7:25. Through Christ we are eternally sure that we are saved and through Christ we now have and enjoy the exact same peace that Jesus has in His eternity, John 14:27. Jesus never doubts that He is One with God and that He always will be and through our Lord’s anointing so do we. 

2 Through Him also we have [our] access (entrance, introduction) by faith into this grace (state of God's favor) in which we [firmly and safely] stand. And let us rejoice and exult in our hope of experiencing and enjoying the glory of God.

Grace goes beyond us just having our Father’s favor, it also means that He exerts His influence on our souls.

It is a reason for pride and exultation to which our conscience testifies that we have conducted ourselves in the world [generally] and especially toward you, with devout and pure motives and godly sincerity, not in fleshly wisdom but by the grace of God (the unmerited favor and merciful kindness by which God, exerting His holy influence upon souls, turns them to Christ, and keeps, strengthens, and increases them in Christian virtues). 2 Corinthians 1:12

Our Father actually causes us to be strong and virtuous. He directs us and leads us. He never leaves us or forsakes us, Hebrews 13:5. If you ever hear someone tell you that you have decide which path to take, rejoice in the glorious Truth that you don’t. What Shepherd ever leaves his sheep alone to decide where they should go? What vine ever leaves a branch alone to decide what kind of fruit to produce? What head ever leaves its body alone to decide what to do? Jesus is our Shepherd, He is our Vine, and He is our Head. Our Father never leaves us alone, not even for a second, and because He doesn't we are always and eternally justified. This is why we are able to rejoice and have confidence.