'Blameless' in the Bible

The righteousness of the blameless will direct his way, but the wicked shall fall by his own wickedness.

Those who are perverse in heart are an abomination to Yahweh, but those whose ways are blameless are his delight.

Whoever causes the upright to go astray in an evil way, he will fall into his own trap; but the blameless will inherit good.