The Spirit’s role in all believers is instrumental for a proper waiting on God. For one, the Spirit provides insight to the believer through the illumination or understanding of the Scriptures. The obvious difference is that the Spirit does not work through believers to inspire additional divine revelation, but rather helps the Christian understand and believe and implement what was previously inspired by the Spirit to the apostles and then written down for the church of all time. Isn’t it true that we do not need new revelation to be faithful in our circumstances, but rather a more solidified hope in what God has revealed already in the Word?
Furthermore, a massive role of the Spirit in our lives is to convict us of our sin as He leads us into more and more of the truth of Christ so that we bring glory to his name.
Lastly, is he not instrumental in choosing to bless our evangelistic and discipleship efforts as He brings conviction to those with whom we are sharing the truth? That is necessary since our ministry efforts are completely powerless without this activity from the Holy Spirit.
In the end, we would be lost in our journey and completely lacking any ministry effectiveness without the Divine Helper, so what love and care is demonstrated by our Lord giving us this gift!