The Gospel of. . .
grace (Galatians 1:6 ESV)
the kingdom (Matthew 24:14 NASB)
Christ (I Thessalonians 3:2 ESV)
the circumcision & uncircumcision (Galatians 2:7 ISV)
salvation (Ephesians 1:13 ISV)
peace (Ephesians 6:15 KJV)
power (Romans 1:16 ISV)