ISB ~ Ephesians 1 v4

holy and blameless:The standard of spiritual perfection that God desires for his children (5:27; Col 1:22).

• Paul employs cultic terminology from the OT, where holy means “set apart” for the Lord and blameless means “unblemished” or “fit for sacrifice”. This recalls how animals were set apart for priestly inspection, and only those free of physical defects could be sacrificed to Yahweh (Lev 1:3, 10). These offerings were mere shadows of the Christian vocation to offer ourselves as holy and living sacrifices to the Father (Rom 12:1) (CCC 1426, 2807). See note on Eph 5:2.