"What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?"
Lets say you are at home, and your stomach says your hungry. You believe and have faith that there is food in the fridge. Your friend tells you that there is indeed food in the fridge. You know that the food in the fridge would make your stomach feel better, but unless you actually get off the couch and go in to the fridge and get some of the food you will still be hungry.
In the gospel you can believe that Christ is the Savior of the world. You might even read scriptures, and have your friends tell you all about it. But unless you actually do those things which Christ has commanded us to do on your own, you will never be able to gain a testimony, and be saved at the last day.
The first action to take after having a Faith in Christ is Repentance. To Repent is to ask for forgiveness for sin, or something you have done wrong, and to promise that you will do you best to never do it again. Part of the Repentance process also includes making things right with others, or paying them back if you stole something. When we sin we incur spiritual debt, but through Repentance and exercising our Faith in Jesus Christ that debt can be paid.
After you
believe and
repent of your past sins the next step is
Baptism. Just as before if you have a
belief and do nothing about it, then you really don't
believe in it that much. If you truly
believe that Christ is your Savior, and you have a desire to follow Him, then you will be
baptized even as He was.
When Jesus Christ was
baptized He walked somewhere around 40 miles to get to John the Baptist. There were people who
baptized right in Jerusalem, but He walked to John the Baptist because John had something that the others did not have . . . The Priesthood. The Priesthood is the Authority to act in the name of God. It is required to perform sacred ordinances. While anyone can go to a lake and perform a
baptism, only those baptisms done by Priesthood Authority will be recognized by God.
Even after we are
Baptized we still need to receive the
Gift of the Holy Ghost. This is much like an upgraded conscience. The
Holy Ghost is there to testify of truth, to comfort us(
John 14:16), and to help us make good decisions. We can feel the influence of the
Holy Ghost before
Baptism, but the
Gift of the Holy Ghost is when
He becomes a constant companion, if we live worthy of
His presence.
The Gospel of Jesus Christ is just that, His Gospel. We have to follow His plan in order to have a part in it. We cannot pick and choose which parts we like and which parts we don't. If we are to live again in the presence of our Eternal Father, we need to
Endure to the End of all things.
So in order to truly be 'saved' you must have
Faith in Jesus Christ and His atonement,
Repent of your sins, be
Baptized by someone who holds the Priesthood, Receive the
Gift of the Holy Ghost, and
Endure to the End.