HAVE YOU HEARD THIS?
It's a saving TRUTH!

The time has come for the fulfillment of God’s loving promise to “bless (i.e. grant Eternal SALVATION/Eternal Life to) all nations” {through the “Seed” of Abraham (Gal 3:8) and of David (Act 13:33-35)}.

This saving "blessing" comes as: 
  remission of sin (or deliverance from darkness and destruction), 
  bestowal of the Holy Spirit, Who         assures us of reception into God’s heavenly kingdom and                    empowers us unto conforming  to the image of Christ as sons of God.

This salvation is freely given to anyone who 
     repents of sin/ignorance, 
    believes in and submits to Jesus as "The Christ”
{i.e. the One divinely Anointed to be the Son of God (Lk 1:35; Heb 1:5), Lord, Judge and Saviour of all (Isa 49:6)}: as proved by His life and resurrection from death (Act 17:31; Rom 1:4).

This was the core Gospel witness of the Apostles