Job 26:1-4 (KJV)
But Job answered and said,
How hast thou helped him that is without power? how savest thou the arm that hath no strength?
How hast thou counselled him that hath no wisdom? and how hast thou plentifully declared the thing as it is?
To whom hast thou uttered words? and whose spirit came from thee?

The Bible tells us to try the spirits whether they be of God. Job does that very thing in this passage. His reply to Bildad was simply, "whose spirit came from thee?" It obviously wasn't God's.
Notice the questions Job urges Bildad to consider:
• • How hast thou helped?
• • How savest thou the arm?
• • How hast thou counseled?
• • How hast thou plentifully declared the thing as it is?
• • To whom hast thou uttered words?
• • Whose spirit came from thee?

We would be wise to weigh any counsel or comfort we offer others in the scale of these questions.