How do we know Christ's redemption is applied to us?

The assurance of Christ's redemption being applied to an individual comes from God's powerful act of bringing His people to Himself, as stated in Exodus 15 and throughout the entire Scripture. Just as the Israelites were redeemed by the blood of the lamb and then delivered from Egypt, believers today are assured that God will apply the redemptive work of Christ to those whom He has chosen (Romans 8:28-30). This transformative work is often accompanied by a change in heart, resulting in a desire to worship and glorify God. When God, through the gospel, makes Himself known to us, leading to a genuine conviction of sin and a cry for mercy, we begin to realize that we are part of His redeemed community, marked by gratitude and song.