ARE THERE TWO GOSPELS? THE ERROR OF GEOFFREY GRIDER: NOW THE END BEGINS

http://www.nowtheendbegins.com/gospel-of-the-kingdom-that-will-be-preached-in-the-time-of-jacobs-trouble-is-not-pauls-gospel/

Grider: ".. the gospel of the grace of God given exclusively to Paul in Damascus by Jesus for the Church Age was markedly different from the gospel preached by Peter in Acts 2. Today I want to show you yet another gospel that will be preached in the end times, and it’s called the gospel of the kingdom. This gospel, much like Peter’s, is a combination of faith plus works, and Jesus warns that failure to abide by it will result in the loss of your salvation. This gospel (of the kingdom), much like Peter’s, is a combination of faith plus works, and Jesus warns that failure to abide by it will result in the loss of your salvation."

On the day of Pentecost Peter preached a "gospel of grace" without works:
Those who believed what Peter said were baptized and added to the church that day--about 3,000 in all. (Acts 2:41).
Paul also undoubtedly preached the same "gospel of grace" without works:
For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast. (Ephesians 2:8 cf. Titus 3:5).
Nevertheless, James reminds us that that faith without works is dead. (James 2:17, 20, 26). Faith cannot be acquired by works, although the scriptures make it very clear that subsequent to salvation, faith must necessarily be accompanied by works if it is genuine. (2 Corinthians 13:5). There is no contradiction in the scriptures, although some who have given themselves over to error and perversity would argue otherwise.

Does Jesus say that "the gospel of the kingdom is a different gospel", as Grider so forcefully puts it?

Grider: "But one thing that Matthew 24 does not address and does not discuss is any reference to Christians or to the Church Age that we currently find ourselves in. Why not? Because the focus is squarely on Israel and the trials and tribulations of the Jewish people in the time of Jacob’s trouble."

Grider: Matthew 24 does not mention Christians.. REALLY?

Jesus addresses His disciples i.e. the future church/Christians: He speaks to them about two separate events in history: {1} the signs of His coming and the end of the age, and {2} the destruction of the temple in 70AD. Jesus warned about the great tribulation and the falling away, events that most certainly involve the Christian remnant.  

As he sat on the Mount of Olives, the disciples came to him privately, saying, “Tell us, when will these things be, and what will be the sign of your coming and of the end of the age?

“Then they will deliver you (Christians) up to tribulation and put you to death, and you will be hated by all nations for my name’s sake. And then many will fall away and betray one another and hate one another. And many false prophets will arise and lead many astray. And because lawlessness will be increased, the love of many will grow cold. But the one who endures to the end will be saved. And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come. (Matthew 24:3,9-14, confirmed by Paul: 2 Thessalonians 2:3).

70AD The destruction of Jerusalem by the Roman Army:

“So when you (Christians) see the abomination of desolation spoken of by the prophet Daniel, standing in the holy place (let the reader understand), then let those who are in Judea flee to the mountains. (Matthew 24:15-16; Daniel 9:27). 

The rapture is not "conspicuously absent" from Matthew 24 as Grider claims:

Jesus speaks explicitly in consecutive terms: “Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light, and the stars will fall from heaven, and the powers of the heavens will be shaken. Then will appear in heaven the sign of the Son of Man, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory. v31-And he will send out his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of heaven to the other. (Matthew 24:29-31). His elect are believers, i.e. the church. The rapture (verse 31) in fact follows the great tribulation. This exact sequence of events is confirmed in Revelation 6.

Israel will not be raptured. It is during the second half of Daniel's 70th week that Israel will flee to a place in the wilderness, probably Petra, in order to survive the great tribulation. (Micah 2:12; Isaiah 63:1-6). The Lord will protect and nourish them in the wilderness for 1260 days i.e. 3.5 years. 

No Other Gospel

The apostle Paul is not recorded as using the phrase "the gospel of the kingdom". He wrote about "the gospel", "the gospel of Christ", "the gospel of God", but the phrase "the gospel of the kingdom", cannot be found on Paul's lips.  However, Paul does refer to "the kingdom" a number of times: Romans 14:17; 1 Corinthians 4:20; 6:9, 10; 15:24, 50; Galatians 5:21; Ephesians 5:5; Colossians 1:13; 4:11; 1 Thessalonians 2:12; 2 Thessalonians 1:5; and 2 Timothy 4:1, 18. The terms "the gospel of God", "the kingdom of God", and "the gospel", are inextricably connected by Jesus Christ Himself. (Mark 1:14-15). The King James translation of Mark 1:14 is "the gospel of the kingdom of God", Greek εὐαγγέλιον θεοῦ = the gospel of God. In other words they are synonymous terms.

Jesus Christ used the phrase a number of times :

"..And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come. (Matthew 24:14). To restate the obvious: the gospel of the kingdom will be proclaimed to the whole world, literally, the inhabited earth, as in Luke 2:1 and Acts 11:28 . "[The kingdom (932 /basileía) is constantly used in connection with Mark 1:14-15). The rule of Christ in the hearts of believers – which also extends in various stages.]" {1}

“The Law and the Prophets were until John; since then the good news of the kingdom of God is preached, and everyone forces his way into it.. (Luke 16:16; cf. Matthew 11:12 ). It is clear that the kingdom of God follows the Law and the Prophets... for everyone.

Now after John was arrested, Jesus came into Galilee, proclaiming the gospel of God, and saying, “The time is fulfilled, and the kingdom of God is at hand; repent and believe in the gospel.” (Mark 1:14-15). 

I am astonished that you are so quickly deserting him who called you in the grace of Christ and are turning to a different gospel— not that there is another one, but there are some who trouble you and want to distort the gospel of Christ. But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed. (Galatians 1:6-9).

For if someone comes and proclaims another Jesus than the one we proclaimed, or if you receive a different spirit from the one you received, or if you accept a different gospel from the one you accepted, you put up with it readily enough. (2 Corinthians 11:4).

Then I saw another angel flying directly overhead, with an eternal gospel to proclaim to those who dwell on earth, to every nation and tribe and language and people. (Revelation 14:6).

When the scriptures are so explicit, how does anyone have the audacity to claim that there are two gospels?

Peter agrees with Paul and warns of ignorant and unstable people who twist the scriptures to their own destruction:

And count the patience of our Lord as salvation, just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures. You therefore, beloved, knowing this beforehand, take care that you are not carried away with the error of lawless people and lose your own stability. But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To him be the glory both now and to the day of eternity. Amen. (2 Peter 3:15-18).

Do your best to present yourself to God as one approved, a worker who has no need to be ashamed, rightly handling the word of truth. (2 Timothy 2:15).

Not many of you should become teachers, my brothers, for you know that we who teach will be judged with greater strictness. (James 3:1).

{1}  http://biblehub.com/greek/932.htm