The yellow highlights that the Christians are EKLEKTOIS (chosen) with a view to obedience and sprinkling from Jesus’ blood. Equal to the obedience to Jesus is the sprinkling by His blood. And equal to His sprinkling is the obedience to Him. Christians are chosen to be sprinkled by His blood and to obey Him. The blessing from God is grace and peace.
To mention obedience and cleansing in the same breathe is Anathema to some religious teachers in our day. When the subject is salvation, obedience is treated as a dirty word. Surely it was a slip by Peter to mention these two unrelated things, obedience and sprinkling, in what could be said in the same breathe. But then again, no. Maybe they are not at all unrelated. It is not unchristian to call for obedience to Jesus Christ. Obedience is not contrary to God’s saving grace by Jesus’ blood. It is only an obedient faith (Rom. 1:5; 16:26) that exhibits saving faith. But to hear some people speak, you would get the idea that it is, especially as the conversation relates to being saved. But I do believe that God does sprinkle me with the saving blood at the point of obedience. This is not to say that the obedience (works) save, but the faith in God seen through the obedience does: I am saved by grace through faith, Eph. 2:8,9.
The Hebrew writer said something about being sprinkled and washed. Heb 10:22 says, “let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.” All of the important components for salvation are mentioned here. There is faith, sincerity of heart, evil washed away, and baptism. Though Peter and Hebrews does not mention the word “baptism”, it is bound to cross the mind of every Scripturally baptized Believer. Peter was the one who said on Pentecost, “Repent, and let each of you be bapized in the name of Jesus Christ, for the remission of sins and you shall receive the gift of the Holy Spirit.”, Acts 2:38. And Paul said in Acts 22:16 that he was told by Ananias, “Now why do you delay? Arise and be baptzed and washed away thy sins, calling on His name.” Again, we see similar components of sin being washed away at Baptism.