- For to us God revealed them through the Spirit; for the Spirit searches all things, even the depths of God. For who among men knows the thoughts of a man except the spirit of the man which is in him? Even so the thoughts of God no one knows except the Spirit of God. - 1 Corinthians 2:10-11
- and He who searches the hearts knows what the mind of the Spirit is, because He intercedes for the saints according to the will of God. - Romans 8:27
That the Holy Spirit can be grieved by sin denotes that He has emotions.
- Do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption. - Ephesians 4:30
The volition of the Holy Spirit is demonstrated in His forbidding of Paul to preach in Asia.
- They passed through the Phrygian and Galatian region, having been forbidden by the Holy Spirit to speak the word in Asia; - Acts 16:6
- But one and the same Spirit works all these things, distributing to each one individually just as He wills. - 1 Corinthians 12:11