The first thing I would like to do is give mans meaning of prejudiced.

1. Opinion formed beforehand: a performed opinion, usually an unfavorable one, based on insufficient knowledge, irrational feelings, or inaccurate stereotypes.

2. Holding of ill-informed opinions: the holding of performed opinions based on insufficient knowledge, irrational feelings, or inaccurate stereotypes.

3. Irrational dislike of somebody: an unfounded hatred, fear, or mistrust of a person or group, especially one of a particular religion, ethnicity, nationality, sexual preference, or social status.

When we speak of God, we speak of Pure Spirit and not flesh. The definitions of prejudice is only accountable to man and His disbelief in truth and righteousness. As we see in Jer 13:23, man is accustomed to doing evil and not good.