The Gospel of Jesus Christ can be summed up in two words: Jesus Saves! But the natural reaction of many today to this would be: “I don’t need saving. I’m not lost.”
So here is a short A-B-C summary (with an even shorter version for memorization) that should speak to anyone willing to think about what they really need most:

ADMIT that God is real and you are utterly dependent on Him, and that you have been wrong to deny His existence and live as though He doesn’t exist. You need God to forgive you for this and for all of your sins. (ADMIT that you need a Savior)

BELIEVE that God loved you enough that God the Eternal Son (forever Equal to God the Father and God the Spirit), the Lord Jesus Christ was willing to do for you what you cannot do: to truly become one of us, a true human being, in order to obey His Father in Heaven perfectly and then freely accept the just Penalty for all of your sins, death and Judgment on the Cross, so that you might be forgiven and made perfect. (BELIEVE that God has saved you)

COMMIT to living by faith in Jesus Christ as your Savior and also as your Lord so that you follow Him in loving the Father, Son and Holy Spirit and everyone around you, in reliance on the Spirit, as a permanently loved child of God. (COMMIT to loving your Savior Jesus Christ and to obeying Him as your Lord forever, and to loving everyone around you)

If you ask the Lord Jesus Christ to save you, before it’s too late, you will immediately begin a wonderful new life as a beloved child of God rather than remaining a guilty sinner fearful of God’s Judgment. (So, the sooner you do this, the better!) And you’ll have God’s promise that you will be welcomed into the Kingdom of Heaven that’s coming. But you will go to Hell if you don’t ask the Lord to save you before it’s too late.