How do we know that Jesus was sent to redeem a specific people?

In His prayer recorded in John 17, Jesus specifically identifies that He prays not for the world but for those whom the Father has given Him, illustrating the doctrine of limited atonement. The consistent theme throughout Scripture is that God has elected a specific people for redemption, reflecting His sovereign grace. Jesus emphasizes His role as the Good Shepherd who knows His sheep, thus corroborating that His redemptive work is aimed at a particular group—those predestined to come to Him.