John 16:13 - “But when He, the Spirit of Truth, comes, He will guide you into all truth. He will not speak on His own; He will speak only what He hears, and He will tell you what is yet to come.”
Jesus was directly linked to the Father. He only said and did what He heard from Him. When Jesus was on earth He was the only one directly linked to God. Jesus went to death to take our sin and purify our hearts and minds so that we can be righteous before God. This way the Holy Spirit could also make His home within us. Basically, through the cross and resurrection Jesus multiplied Himself in us. Now we too, have direct access to the Father. We need to imitate Jesus in this.
When Jesus acted and spoke it was direct from God. We have the Holy Spirit in us, who, as we see in this verse, will lead us into all truth. He will speak through us, directly from God. As we let the Spirit guide us into truth we need to let Him take control, because He is our link to the Father.
In addition to connecting us directly to God, the Holy Spirit is also our helper. We will see trouble in this life, but He will help us through. He will comfort us when we need it and give us wisdom to make the right choices and decisions. Since He is God’s Spirit He also brings all of God to us, so we can be connected to God’s heart and mind.
This verse also speaks of the Spirit telling of things yet to come. God knows all, from beginning to end and through His Spirit we will receive a vision for our future. As we stay in tune with the Spirit we will be able to see the plan the God has for us as it unfolds in our lives.