Without question, there is only one true gospel. Every other gospel is a false gospel. Those who preach a false gospel are false prophets. And those who believe a false gospel are yet lost, under the wrath and curse of God (Read Gal. 1:6-8). Serious as that charge is, it cannot be ignored or denied.
I am fully convinced that the one true gospel is the gospel of salvation by grace alone. By that statement I mean that salvation comes to helpless, depraved, lost and justly condemned sinners only by GOD'S SOVEREIGN, ETERNAL ELECTION (Eph. 1:3-6; II Thess. 2:13-14; John 15:16), CHRIST'S PARTICULAR, EFFECTUAL, SUBSTITUTIONARY REDEMPTION OF HIS PEOPLE (Isa. 53:8-11; John 10:11, 15; Gal. 3:13; Heb. 9:12), and THE HOLY SPIRIT'S IRRESISTIBLE, EFFECTUAL CALL (Psa. 65:4; 110:3; John 6: 63; Rom.9:16). Salvation is the free, unconditional gift of God's eternal, immutable grace. It is not in anyway determined by or dependent upon the will,works,or worth of the sinner (II Tim. 1:9; Eph. 2:8-9; Rom. 9:11-16).
Recently, I received a letter from a lady who asked, "How can I be sure the gospel you preach is the only true gospel?" That is a fair, honest, and reasonable question. It is a question you would be wise to ask and a question every preacher should be required to answer. This is my answer: I know that the gospel of salvation by grace alone, through faith alone, in Christ alone is the only true gospel because...
1. This is the only gospel revealed in all the Holy Scriptures (Lk. 24:44-47; Acts 13:38-39).
2. This is the only gospel that glorifies God in all his holy attributes (Rom. 3:24-26; Psa. 85:10-11)
3. This is the only gospel that honors, magnifies, and satisfies all the demands of God's holy law (Rom.3:31).
4. This is the only gospel that offers hope to helpless, guilty sinners who can do nothing for themselves (Eph. 2:1-5).
5. This is the only gospel that gives all the glory of salvation to the triune God alone (I Cor. 1:29-31).
6. This is the only gospel that completely forbids the boasting of the flesh (Psa. 115:1).
7. This is the only gospel that compels saved sinners to consecrate themselves to God with grateful, devoted hearts (I Cor. 6:9-11, 19-20).