God has made this promise come true for us, his children, by raising Jesus from the dead. We read about this also in Psalm 2: ‘You are my Son. Today I have become your Father.’
After Jesus was raised from the dead, his followers remembered that Jesus had said this. Then they believed the Scripture and the words Jesus had said.)
God raised Jesus from the dead, and he will never go back to the grave and become dust. So God said: ‘I will give you the holy and sure blessings that I promised to David.’
So also Christ did not choose himself to have the honor of being a high priest, but God chose him. God said to him, “You are my Son. Today I have become your Father.”