How do we know Jesus is the Lamb slain for our sins?

Various scriptural references point to Jesus as the fulfillment of the sacrificial system established in the Old Testament. For instance, Exodus 12 describes the Passover lamb, whose blood ensured safety for the Israelites, symbolizing God's provision. Jesus embodies this fulfillment and is acknowledged in 1 Peter 1:19 as the precious blood of a lamb without blemish. The repeated emphasis on Jesus's sacrificial death throughout Scriptures underscores that He is indeed the Lamb intended to take away the sins of the world, redeeming His people through His blood.