And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come. (Matthew 24:14 KJV)
The Gospel of the Kingdom is the rule of God with good news. The rule or standard of God for all mankind is to love, believe, and have eternal life. The good news concerning God’s rule is that we will have eternal life if we walk in His love and faith. This love and belief is based on a person rather than a religion. This person is Jesus Christ, the Son of the living God. And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him (1 John 4:16 KJV). This scripture reveals that God is love. He sent His love to all mankind by way of His Son, Jesus Christ.
The scripture from above (Matthew 24:14) teaches us that the end of this age, the end of this world as we know it, or the end of this dispensation of grace that we are in and have been in for over 2,000 years after the death and resurrection of Jesus Christ will end after all of mankind in every nation, tribe, and tongue or language has been made aware of the truth concerning the rule of God that comes with a promise of eternal life. At the end of this age, all of mankind will have been giving a chance to choose eternal life or eternal death after being made aware of the Truth. While we are still living under this dispensation of grace, choose eternal life which is in Jesus Christ.