Psalm 110 tells us that God has sworn and will not change His mind to appoint the Lord as our High Priest forever. This shows the Father’s determination. He was pleased to crush His Son in order to gain us. The Father, the Son and the Holy Spirit were pleased to accomplish this. Hebrews chapter 8, verse 1 mentions that the Lord is the High Priest and is seated at the right hand of the Father, because He has accomplished the most perfect thing. We were once far away from God. But today, not only are we saved, but we have become priests, being closest to God.