How do we know Jesus is the Angel of the Lord?

In Exodus 23:20, God speaks of sending an angel with a capital 'A' before His people, which is understood in Reformed theology as the pre-incarnate Christ—Jesus Himself. This angel is described as the one who bears God's name, which signifies His divine authority to forgive sins, a prerogative that belongs solely to God. Furthermore, Christ's role as the messenger of the covenant underscores His responsibility in the covenant of grace—He was sent by God not only to guide His people but to accomplish their redemption through His life, death, and resurrection. This direct link between the Angel of the Lord and Jesus Christ highlights the continuity of God's promise throughout Scripture.