as His divine power has given to us all things that pertain to life and godliness, though the knowledge of Him who called us by glory and virtue,
by which have been given to us exceedingly great and precious promises, that through these you may be partakers of the divine nature, having escaped the corruption that is in the world through lust."
2 Peter 1:2-4 (NKJV)
Of all the times that I have flown, I have only sat in the first-class section once; I was upgraded by the airline and enjoyed my flight in more comfort than I would have otherwise. Being in first class was different, not only because I had never sat there before, but because of all the benefits I received. Normally I fly in economy class and what you receive on the flight is minimal. But when you fly in first class it seems like everything you might need on an airplane is included; first class is all inclusive while economy class is not.
People have different ideas about what it means to be a Christian. Some people think that being a believer in Jesus is basically just a way to ensure that you will go to heaven when you die. Some people think that becoming a Christian means you go to heaven and have a few nice things now, but there are still have a lot of things you will not have until you get to heaven. But, the great thing about salvation is that it is all inclusive! Salvation is wonderful, but there is also much more.
Being a Christian does not mean that you barely get by in life and go to heaven one day. As Peter points out in his second letter, God has given us all things for life and godliness. People will usually ask that if it really does mean all, then things should be different in their life. But, notice that it talks about these things coming to us through the knowledge of Him and that we must partake. God has sent Jesus, now it is up to us to find out what belongs to us and partake of it. Don't be an economy class Christian, live in the all inclusive salvation that God provided for us through Jesus.