'Blameless' in the Bible

You and God are witnesses of how pure, honest, and blameless our conduct was among you who believe.

May He make your hearts blameless in holiness before our God and Father at the coming of our Lord Jesus with all His saints. Amen.

And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.