The Gospel is preached to testify about who God is, what His standards are, what He has done to bring salvation to mankind through the Lord Jesus Christ.
Bible Scriptures: Darby Translation
Romans 3:23 “for all have sinned, and come short of the glory of God;”
Isaiah 53:4-9 “4 Surely *he* hath borne our griefs and carried our sorrows; and we, we did regard him stricken, smitten of God, and afflicted.5 But he was wounded for our transgressions, he was bruised for our iniquities; the chastisement of our peace was upon him, and with his stripes we are healed.
6 All we like sheep have gone astray, we have turned every one to his own way; and Jehovah hath laid upon him the iniquity of us all.
7 He was oppressed, and he was afflicted, but he opened not his mouth; he was led as a lamb to the slaughter, and was as a sheep dumb before her shearers, and he opened not his mouth.
8 He was taken from oppression and from judgment; and who shall declare his generation? for he was cut off out of the land of the living; for the transgression of my people was he stricken.
9 And [men] appointed his grave with the wicked, but he was with the rich in his death, because he had done no violence, neither was there guile in his mouth.”
Isaiah 53:12 “because he hath poured out his soul unto death, and was reckoned with the transgressors; and he bore the sin of many, and made intercession for the transgressors.”
Romans 8:38-39 “38 For I am persuaded that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers,
39 nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which [is] in Christ Jesus our Lord.”