Finally, when the “full limit of the time arrived, God sent forth his Son,” and through him revealed the meaning of the “sacred secret,” gave the definitive answer to the issue raised by God’s adversary (see JEHOVAH [The supreme issue a moral one]), and provided the means for redeeming obedient mankind from sin and death through the ransom sacrifice of his Son. (Gal. 4:4; 1 Tim. 3:16; John 14:30; 16:33; Matt. 20:28)
... More importantly, he brought them spiritual health and forgiveness of sins, being authorized to do so because, as the Christ, he was foreordained to provide the ransom sacrifice, in fact was already undergoing the baptism unto death that would terminate on the torture stake.—Isa. 53:4-8, 11, 12; compare Matthew 9:2-8; 20:28; Mark 10:38, 39; Luke 12:50.