This is a brief explanation of the Calvinist TULIP doctrine, along with the scriptural references they use to support their position. After each doctrine, I answer with the Biblical response and my scriptural support.
"Total Depravity - As a result of Adam’s fall, the entire human race is affected; all humanity is dead in trespasses and sins. Man is unable to save himself (Genesis 6:5; Jeremiah 17:9; Romans 3:10-18)."
The entire human race is affected by Adam's Sin. Because of his sin, we are dying physically, and we are spiritually separated from God as our righteousness is as filthy rags to Him. Of course, man is unable to save Himself and saving us is the reason God sent Jesus. However, God gives to EACH person a measure of faith with which they can respond to the Holy Spirit when He convicts them of sin Romans 12:3. Each person chooses to respond according to their free will. If they did not have the ability to choose life or death, like Adam did, of what good would this gift of faith be? Calvinists don't need it. They are irrevocably chosen by God. The non-elect don't need it because they are irrevocably condemned. So, either the Calvinists, or Paul, is wrong.
"Unconditional Election - Because man is dead in sin, he is unable to initiate a response to God; therefore, in eternity past God elected certain people to salvation. Election and predestination are unconditional; they are not based on man’s response (Romans 8:29-30;9:11; Ephesians 1:4-6, 11-12) because man is unable to respond, nor does he want to."
In James 1:18 we are told that out of everything God created, mankind is His favorite, the firstfruits of Creation. In Gen 1:26 and 3:22 we learn that man alone is made in the image of God. God used free will to create. God place Adam in the garden with free will to choose either the tree of life or the tree of death. Romans 1:18-20 tells us that God constructed creation in such a way that NO ONE has an excuse for not knowing Him. God has clearly given mankind the ability to respond to Him. Any statement to the contrary is contrary to scripture.
"Limited Atonement - Because God determined that certain ones should be saved as a result of God’s unconditional election, He determined that Christ should die for the elect alone. All whom God has elected and for whom Christ died will be saved (Matthew 1:21; John 10:11; 17:9; Acts 20:28; Romans 8:32; Ephesians 5:25)."
There are nearly 100 scriptures which teach that Jesus died for ALL people and that any/every person has only to believe on Him for salvation (List of scriptures included on this site on page by the same name). That God chooses individuals for salvation, while condemning others to hell without hope for redemption is a lie straight from the pits of hell.
"Irresistible Grace - Those whom God elected He draws to Himself through irresistible grace. God makes man willing to come to Him. When God calls, man responds (John 6:37, 44; 10:16.)"
I've already shown with scripture that God draws ALL men to Himself (Romans 1:18-20 and many others listed on this site on Limited Atonement page) and that each person has the ability to respond, either favorably or unfavorably, to the conviction of the Holy Spirit (Adam's free will to choose life or death in the Garden of Eden).
"Perseverance of the Saints - The precise ones God has elected and drawn to Himself through the Holy Spirit will persevere in faith. None whom God has elected will be lost; they are eternally secure (John 10:27-29; Romans 8:29-30; Ephesians 1:3-14)."
There are nearly 200 scriptures which speak to the forfeiture of one's salvation (I have a partial list on this site, the page called Once Saved Always Saved. I have other verses I don't have posted here just yet) . As is commonplace with Calvinists, they ignore or dismiss anything which disagrees with their elevated status before God. I've asked many Calvinists to explain how they reconcile these scriptures to their doctrine. I have yet to meet one who even tried.