When Calvinism sets into a church often the spiritual ruin of that church will happen quickly. It will stunt the growth of that church. The believers will become as the believers in Corinth--carnal, giving into immorality, drunkenness, taking one another to court, etc. Their spiritual life will be brought to "ruins" which doesn't mean they will lose their salvation.
However, the phrase goes back to the one bringing in the doctrine. They will be the ones responsible for this chaos and will stand before God and give account for it.
Brother DHK,
History does not prove that those who adhere to Calvinism live abominable lives engrossed in sins. Case in point, the Puritans. There name speaks for themselves. When I was in college at a secular university taking a American History class, even the class taught about the upright lives these people lived, even though admittedly, all groups have there flaws, such as the Puritans burning so called witches and persecuting Baptist.
The London Baptist Confession of faith makes it clear in several points
that those believing in the doctrines of grace will have good works.
"2._____ These good works, done in obedience to God's commandments, are the fruits and evidences of a true and lively faith; and by them believers manifest their thankfulness, strengthen their assurance, edify their brethren, adorn the profession of the gospel, stop the mouths of the adversaries, and glorify God, whose workmanship they are, created in Christ Jesus thereunto, that having their fruit unto holiness they may have the end eternal life.
( James 2:18, 22; Psalms 116:12, 13; 1 John 2:3, 5; 2 Peter 1:5-11; Matthew 5:16; 1 Timothy 6:1; 1 Peter 2:15; Philippians 1:11; Ephesians 2:10; Romans 6:22 )
3._____ Their ability to do good works is not at all of themselves, but wholly from the Spirit of Christ; and that they may be enabled thereunto, besides the graces they have already received, there is necessary an actual influence of the same Holy Spirit, to work in them to will and to do of his good pleasure; yet they are not hereupon to grow negligent, as if they were not bound to perform any duty, unless upon a special motion of the Spirit, but they ought to be diligent in stirring up the grace of God that is in them.
( John 15:4, 5; 2 Corinthians 3:5; Philippians 2:13; Philippians 2:12; Hebrews 6:11, 12; Isaiah 64:7 )
._____ They who are united to Christ, effectually called, and regenerated, having a new heart and a new spirit created in them through the virtue of Christ's death and resurrection, are also farther sanctified, really and personally, through the same virtue, by His Word and Spirit dwelling in them; the dominion of the whole body of sin is destroyed, and the several lusts thereof are more and more weakened and mortified, and they more and more quickened and strengthened in all saving graces, to the practice of all true holiness, without which no man shall see the Lord.
( Acts 20:32; Romans 6:5, 6; John 17:17; Ephesians 3:16-19; 1 Thessalonians 5:21-23; Romans 6:14; Galatians 5:24; Colossians 1:11; 2 Corinthians 7:1; Hebrews 12:14 )
3._____ In which war, although the remaining corruption for a time may much prevail, yet through the continual supply of strength from the sanctifying Spirit of Christ, the regenerate part doth overcome; and so the saints grow in grace, perfecting holiness in the fear of God, pressing after an heavenly life, in evangelical obedience to all the commands which Christ as Head and King, in His Word hath prescribed them.
( Romans 7:23; Romans 6:14; Ephesians 4:15, 16; 2 Corinthians 3:18; 2 Corinthians 7:1 ) "
It is my opinion that in fact many of those who are not Calvinists who hold to the doctrine of "easy believism" are in fact the ones living sinful lifestyles, despite proclaiming themselves as profession Christians.
Brother Joe