A biblically sound, understandable, and humbly and charitably written book on the doctrines of grace (Reformed theology, AKA Calvinism). It's packed with proof texts, which are not just listed, but are explained. The book addresses many objections.
The book does an excellent job showing how the 5 Points are not only biblical but are interdependent; that denying one logically undermines the others.
Notes
Total Depravity
Bible gives examples of relative good (2 Kings 10:30; 12:2; Luke 6:33; Rom 2:14).
Common grace restrains evil and also enables relative (not true) good.
Relative good done by reprobate isn't truly good because it isn't motivated by love and faith, so it's actually sin.
Verses: Gen 6:5; 8:21; Jer 17:9; Ps 51:5; Rom 3:10-18; 8:7-8; Matt 7:17-18; 13:14; 1 Cor 1:1-18, 21; 2:14; 12:3; John 6:44, 65; 8:43; 15:4-5; Acts 16:14; Eph 4:18; 2 Cor 3:12-18.
Bible compares regeneration to heart changed from stone to flesh (Ezek 11:19), birth (John 3:3), creation (2 Cor 5:17; Gal 6:15), resurrection (Eph 2:1; Col 2:13). In all these situations, the subject is passive, not active.
Unconditional Election
God has foreordained (sovereignly planned) everything (Eph 1:11; Gen 45:5-8; Acts 4:27-28).
Verses: John 6:37-39; 15:16; Acts 13:48; 2 Thess 2:13; Eph 1:4-5; Rom 8:29-30; 9:6-26.
The objection of the injustice of election in Rom 9:14 would only arise if election is unconditional.
If God foreknows all events, then logically, those foreknown events must occur. Thus, if God foreknows that a person will believe, then logically, that person must believe.
Humans are free to do exactly what they want. God does not coerce anyone against their will.
Humans have free agency, but don't have free will, in same way that alcoholics have free agency to drink or not (they're not compelled), but not free will, because they can't help but drink (they're enslaved to alcohol).
Christians technically don't have free will either, because though they have choice to reject Christ, Christ won't let them (John 6:37, 39, etc.).
Limited Atonement
Verses: John 6:37-40; 10:15, 26; 15:13; Matt 1:21; Acts 20:28; Eph 5:25; 1 John 4:10; Rom 5:8; 8:32.
Limited atonement means Christ's atonement was limited to a definite, particular number of people; it wasn't for all humans who have ever or will ever exist.
If Christ loved all humans equally, and died for them all, that would break the illustration of marriage between Christ and Church, because that would mean Christ gave Himself for others beside His bride, which would be polygamous.
God doesn't love all people the same (Acts 3:2; Rom 8:29; 9:13).
Atonement must be limited because election is limited.
In John 3:16-17, "world" means that Christ saved people from every tribe and nation, not that He saved every person in the world.
Bible says Jesus's death actually, not theoretically, atoned for sin (Gal 3:13; Rom 5:10). If He died for all, then all would be redeemed (saved), and go to Heaven. Did this happen for Judas, or Esau, or others whom the Bible condemns? No.
When 2 Cor 5:14-15 says "one died for all," it also says, "therefore all died," which refers to spiritual death of believer (Rom 6), not to physical death experienced by all. It also says these "would live unto Him" which can only be said of believers. This passage refers to believers.
Bible teaches that God intends salvation only for certain people, but it also teaches that God freely and sincerely offers salvation to everyone (Ezek 33:11; Is 45:22; 55:1; Matt 11:28; 23:37; 2 Pet 3:9; Rev 22:17).
Passages that seem universalistic (1 John 2:2; John 1:29; 3:32; 2 Cor 5:14-15; 1 Tim 2:6) use "world" and "all" in restricted, limited sense, as seen from context. Other passages use those words in limited sense (Luke 2:1-2; 1 Cor 6:12; 15:22; 10:23; John 12:32).
Irresistible Grace
Verses: John 6:37, 44; 10:16; Rom 8:29-30.
Irresistible (or efficacious, effectual, unconquerable, certain) grace means that the Holy Spirit so works in a person's life that they will definitely and certainly be changed from evil to good.
Grace must be irresistible, because otherwise everyone in their depravity would reject Christ.
Word "draw" in John 6:44 is same used for drawing net of fish (John 21:6, 11) and Paul being dragged (Acts 16:19; 21:30). The fish and Paul were powerless to resist.
Perseverance of the Saints
Verses: Rom 8:38-39; John 6:39, 51; 10:28-29; 11:25; Eph 1:13-14; 1 Pet 1:4-5;
If Christ was really punished for the sins of His people (Gal 3:13), they can't go to Hell and be punished. They must go to Heaven.
Bible speaks of believers having eternal life in past and present tense, not only in future tense (John 3:36; 5:24; 1 John 5:13).
Verses that speak of people falling away from faith (2 Tim 3:5; 2 Cor 11:14; Matt 7:22-23) don't disprove perseverance; they are simply warnings that people can have external faith (seem to others to be believers) but not truly be Christians (Rom 9:6). They are warnings to Christians to make their calling and election sure (2 Pet 1:10).
The Great Mystery
Bible is clear that everything, even disasters (which can include human sin), are ordained by God. See Joseph being sold into slavery (Gen 45:8; 50:20) and Jesus' crucifixion (Acts 2:23; 4:28).
God's sovereignty and human responsibility may seem logically contradictory, but we must believe both, because the Bible teaches both. The Bible says truth can seem foolish (1 Cor 1:19).
We can't fully understand the doctrines of grace because we're finite mortals (Isa 55:9; Job 38; Deut 29:29).
"Although man is totally depraved and unable to believe, and that although faith is a gift of God produced by the irresistible work of the Holy Spirit, nevertheless, it is up to man to believe. He has the duty to obey God's command to believe."
Twelve Theses on Reprobation
We can speak of 2 parts to reprobation: preterition and condemnation. Preterition means that God passed by some while electing others. Condemnation means that those who are passed by are eternally condemned for their sin. Preterition is unconditional (God doesn't reprobate people based on foreseen actions) (Rom 9:13-18). Condemnation is conditional in sense that once someone is passed by, they are condemned for sin and unbelief.
If election is true, reprobation must be true. If God consciously chooses some, He necessarily consciously passes by others.