'Blameless' in the Bible

A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;

And let these also first be proved; then let them use the office of a deacon, being found blameless.

And these things give in charge, that they may be blameless.

that you keep the commandment without spot, blameless, until the appearing of our Lord Jesus Christ;