This is sin, to reject Jesus, to declare he is nothing but a delusional or deceitful man. And this was the condition of our heart, when filled with unbelief, we rejected God, his Son, and his sacrifice. We have screamed, “Crucify him!” with our unfaithfulness and disobedience. We have said with the crowd, “He is not our King!” “He is not our Messiah!” “Let his blood be on us!”
But God, being rich in mercy and being patient with us, his chosen people, “has shone in our hearts to give the light of the knowledge of the glory of God in the face of this crucified Christ” (2 Corinthians 4:6). And being alive by faith in him, we cling to the cross on which our Savior died. It is by his precious blood that we are forgiven and freed from sin and its consequences.
– Marshall Segal (desiringgod.com)