"And he brought them out and said, "Sirs, what must I do to be saved?"
So they said, "Believe in The Lord Jesus Christ, and you will be saved, you and your household"
Then they spoke The Word of The Lord to him and to all who were in his house.
And he took them the same hour of the night and washed their stripes.
And immediately he and all his family were baptized." (30-33)
"It Begins with Faith.
Paul and Sila's answer to the Philippian jailer's question is the essence of salvation:
"Believe on The Lord Jesus Christ, and you will be saved,"
This verse raises two questions:
What does it mean to believe, and what doesn't it mean to be saved?
Belief includes, but is more than just an intellectual assent. Belief includes the idea of total Trust, dependence, and submission of oneself to Christ as Lord (King, Master).
To be saved is to be delivered.
We are delivered from the very presence of sin and evil (satan and hell) and will be delivered into the very presence of God, Christ, and Heaven. We receive this new life by Faith - believing that we are sinful, that Jesus died for our sins, that His death was in our place, and that His payment for sin is fully acceptable in God's sight.
Faith can be summarized in the acrostic:
(copied from NKJV Study Bible notes.)