"I still have many things to say to you, but you cannot bear them now. When the Spirit of truth comes, he will guide you into all the truth; for he will not speak on his own, but will speak whatever he hears, and he will declare to you the things that are to come." John 16:12-13
Yes, our lives are dependent on the Spirit. The Holy Spirit will help us along in our Christian growth. The Spirit makes us to be knowledgeable about the matters of God and to shed light on the dark places in our lives. The Spirit will show us what equates to being in the right relationship with God.
We can trust the Spirit because what is conveyed to us will not be apart from what Jesus wants to communicates to us. These two "persons" are working hand-in-hand. Everything coming to us is about God's way of life that is desired for us.
This Spirit will also have a role outside of us believers. The Spirit will lead those outside the faith into the truth of God. We have these words just before our text regarding the Spirit: "And when he comes, he will prove the world wrong about sin and righteousness and judgment.." John 16:8
This is why I believe we need to pray for the Holy Spirit to guide us into understanding Scripture. In the pages of Scripture we enter into God's realm of life and apart from the Spirit, we cannot really make sense of what we read.
I would ask you to reflect on these passages of Scriptures in preparation for worship this Sunday.