A quick post on Reformed presuppositions concerning salvation.

One of the main objections charged of Reformed Christian Theism (i.e. Calvinism) is the adherence to a particular redemption.  That is, we affirm that God, in keeping with His attributes, chose to save some, and not others. This affirmation is summed up pretty well in the Westminster Confession of Faith:

As God hath appointed the elect unto glory, so hath He, by the eternal and most free purpose of His will, foreordained all the means thereunto. Wherefore, they who are elected, being fallen in Adam, are redeemed by Christ, are effectually called unto faith in Christ by His Spirit working in due season, are justified, adopted, sanctified, and kept by His power, through faith, unto salvation. Neither are any other redeemed by Christ, effectually called, justified, adopted, sanctified, and saved, but the elect only. (WCF 3.6) {Scripture proofs}

Simply stated:
1) From eternity, God appoints a people to glory (that is, to enjoy an eternity in the presence with God via being united with Christ)
2)  Not only does He appoint the end, but the means as well, by the eternal and free purpose of His will.
3) Those whom are elected, who are fallen in Adam, are redeemed in Christ, and are effectually called to faith in Christ by the Spirit working in God’s own timing, and are justified, adopted, sanctified and kept by His power through faith, to salvation.
4) No one else is redeemed by Christ, and enjoy the benefits that union with Christ entails, but the elect.