In the past, God spoke to our people through the prophets. He spoke at many times. He spoke in different ways.
References for Hebrews 1:1
But in these last days, he has spoken to us through his Son. He is the one whom God appointed to receive all things. God made everything through him.
The Son is the gleaming brightness of God's glory. He is the exact likeness of God's being. He uses his powerful word to hold all things together. He provided the way for people to be made pure from sin. Then he sat down at the right hand of the King, the Majesty in heaven.
So he became higher than the angels. The name he received is more excellent than theirs.
God never said to any of the angels, "You are my Son. Today I have become your Father." (Psalm 2:7) Or, "I will be his Father. And he will be my Son." (2 Samuel 7:14; 1 Chronicles 17:13)
God's first and only Son is over all things. When God brings him into the world, he says, "Let all of God's angels worship him." (Deuteronomy 32:43)