In the first chapter of Hebrews, the primary point is that Jesus is the Son of God. Therefore, He is supreme over everything, including angels, who clearly had a powerful role in God’s plan through Israels history, but they are below Jesus when it comes to the hierarchy of created things...

Scripture References: 

Hebrews 1:1–2a (NLT)
Hebrews 1:2b–14 (NLT)
Acts 4:11–12 (NLT)
1 Corinthians 2:12–13 (NLT)