Is Jesus the Messiah?: Analysis of Acts 2:39- The Promise of the Gospel of Salvation; Common and Efficacious Grace; Two Stages of Successful Evangelism; Ephesians 2:8-9; The "Call" of the Gospel; Isaiah 49:5a, 2 Corinthians 6:2, Luke 24:45-46, Luke 24:47-49;Expanded Translation of Verse 39; Acts 2:40;