Luke 5:31-32, “Those who are well have no need of a physician, but those who are sick. I have not come to call the righteous but sinners to repentance.”
We are all ill, and it is killing us all. We all know this, for we all seek idols to give us pleasure in this life to distract us from our fear of death. Sin is killing us; we all know this. We see the evil and death that surrounds us, but not many go to the Doctor. Instead, we go to those practicing false spiritual medicine and take their placebos. These spiritual placebos—idolatry—deceives them. Others know they are sick in sin but do not want to go to the Doctor. He is the only one who can take our sin away (John 14:6). None in this world are well; we are all sick. None are righteous; we are all sinners (Romans 3:10; Psalm 14:1-3; 53:1-3). Repentance is necessary for all.
Thus, Christ the Doctor of Salvation has come to give us all healing. He cleanses us of this sickness in Baptism, and although we still struggle with sin in this life, the Holy Spirit regenerates us (begins rebirth) to and through the Last Day beginning with our Baptism. And so we daily remember our Baptism and trust in the regeneration the Holy Spirit is working in us, continually coming to the Lord’s Table to taste that sweet foretaste of His Heavenly Banquet to come. For those who refuse the Doctor, however, they have no such hope.