"Repent and believe the gospel" is a message from Jesus. It means to turn away from sin and turn toward God. Repentance is not sufficient by itself, and faith in the Gospel is also required. Repentance involves changing one's mind and agreeing that one's sins are abhorrent, and choosing to live for God. Believing means to be fully convinced.
Revelation 20:12
"And I saw the dead, small and great, standing before God, and books were opened. And another book was opened, which is the Book of Life. And the dead were judged according to their works, by the things which were written in the books.Matthew 12:36"But I say to you that for every idle word men may speak,...
19 When anxiety was great within me, your consolation brought me joy.
Colossians 3:20 "Children, obey your parents in everything, for this pleases the Lord." 1 John 2:5-6 "But if anyone obeys His word, God's love is truly made complete in Him. This is how we know we are in Him: Whoever claims to live in Him must walk as Jesus did." 1 John 5:3 "This is love for God: to obey His commands....
John 14:15 - "If you love me, you will keep my commandments.
5 Everyone who believes that Yeshua is the Messiah has God as his father, and everyone who loves a father loves his offspring too. 2 Here is how we know that we love God's children: when we love God, we also do what he commands. 3 For loving God means obeying his commands.