The letter to the Hebrews makes a big deal out of Christ as the High Priest. It requires some careful reasoning since Jesus was not of a priestly family in the Jewish sense. (Hence all the talk about Melchizedek whom the Bible calls a priest even though he was not part of the family.) The reason this is important to the author of the epistle is that the priest is the one who connects the people with God. Jesus is always able to save those who approach God through him, since he lives forever to make intercession for them. Because of Jesus God is not far removed from us, glorying on the throne of heaven. Jesus is the bridge that brings heaven down to earth, lifting up our prayers to God and showering down divine graces and blessings on us. That is why liturgical prayers are offered TO the Father, THROUGH the Son and IN the Holy Spirit.