In the past, God spoke through the prophets to our ancestors in many times and many ways.
References for Hebrews 1:1
In these final days, though, he spoke to us through a Son. God made his Son the heir of everything and created the world through him.
The Son is the light of God's glory and the imprint of God's being. He maintains everything with his powerful message. After he carried out the cleansing of people from their sins, he sat down at the right side of the highest majesty.
And the Son became so much greater than the other messengers, such as angels, that he received a more important title than theirs.
After all, when did God ever say to any of the angels: You are my Son. Today I have become your Father? Or, even, I will be his Father, and he will be my Son?
References for Hebrews 1:5
But then, when he brought his firstborn into the world, he said, All of God's angels must worship him.
References for Hebrews 1:6