'Blasphemed' in the Bible

even though I was formerly a blasphemer [of our Lord] and a persecutor [of His church] and a shameful and outrageous and violent aggressor [toward believers]. Yet I was shown mercy because I acted out of ignorance in unbelief.

Let as many servants as are under the yoke count their own masters worthy of all honour, that the name of God and his doctrine be not blasphemed.