Therefore seeing we have this ministry, as we have received mercy, we faint not;  but have renounced the hidden things of dishonesty, not walking in craftiness, nor handling the word of God deceitfully; but by manifestation of the truth commending ourselves to every man’s conscience in the sight of God.  But if our gospel be hid, it is hid to them that are lost: in whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.  For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus’ sake.  For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.
2 Corinthians 4:1-6

The gospel is many times rejected, because the god of this age; who is Satan; has blinded the eyes of those who are lost. Most of the time that is due to the fact of their ignorance of God, and of God’s word.

The gospel of Jesus Christ is Light in the darkness.  It shows us what is holy, righteous, just and true; and changes the lives of those who believe. The gospel is this – That Jesus Christ died for our sins, He was buried, and He rose again. To believe this and trust in this great work for our salvation, will lead you to Himself, and you will call on His name, and He will hear your cry, and He will deliver you from the darkness of death into His glorious light.