Chosen to be Blameless
Eph 1:4 For he chose us in him before the creation of the world to be holy and blameless in his sight. In love
Whom did He chose? Who is the "us" Paul is referring to? It is not some unknown mysterious category of people. God has chosen those who believe in Christ. Before the creation of the world God predetermined that this would be the category of people whom he would chose to be holy and blameless in his sight. Those who have come to genuine faith in Christ - namely the saints, the faithful in Christ Jesus - are the chosen. If you are a saint, then you are chosen to become holy and blameless in his sight. That is your destiny.
Salvation incorporates not only salvation from the wrath of God, but also salvation from our sinfulness. In Christ we are not only justified (forgiven of sin), but also our sinfulness will be removed (sanctification) and thus we will be guilt free and sinless in his presence. And so we declare the praises due him. For "you are a chosen people, a royal priesthood, a holy nation, a people belonging to God, that you may declare the praises of him who called you out of darkness into his wonderful light." 1Peter 2:9