The scripture in 1Peter about judgment in the house of God must come first is a beautiful promise of the sealing of God's people off before judgment comes.
1 Peter 4:17-18 (KJV)
[SUP]17 [/SUP] For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?
[SUP]18 [/SUP] And if the righteous scarcely be saved, where shall the ungodly and the sinner appear?
Notice this is addressing about those that do not obey the gospel which is to believe in Christ.
Peter was the apostle to the Hebrews...It is a hebrewism from Eze 9 in which they had set aside the jewish elders and marked them before judgment came..these ones were saved from the judgment....all Jewish people would know of this truth.
In other words we get protected/marked by the Spirit of God before judgment comes to protect us..but ti starts at the house of God first..It's awesome!! it's a beautiful picture of us.. We have a good, good Father! and a mighty salvation in Jesus our Lord!