This is because God never said to any of the angels, “You are my Son. Today I have become your Father.” Nor did God say of any angel, “I will be his Father, and he will be my Son.”
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.’
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.”
Solomon will build a temple for worship to me. He will be my son, and I will be his father. I will make his kingdom strong; someone from his family will rule Israel forever.’ ”