How the Great Crowd will survive and come out of the Great Tribulation?

It is written in the book of Revelation how a Great Crowd will survive in the Great Tribulation:

“After this I saw, and look! a great crowd, which no man was able to number, out of all nations and tribes and peoples and tongues, standing before the throne and before the Lamb, dressed in white robes; and there were palm branches in their hands. And they keep shouting with a loud voice, saying: “Salvation we owe to our God, who is seated on the throne, and to the Lamb.”

All the angels were standing around the throne and the elders and the four living creatures, and they fell facedown before the throne and worshipped God, 12 saying: “Amen! Let the praise and the glory and the wisdom and the thanksgiving and the honor and the power and the strength be to our God forever and ever. Amen.”

In response one of the elders said to me: “These who are dressed in the white robes, who are they and where did they come from?” So right away I said to him: “My lord, you are the one who knows.” And he said to me: “These are the ones who come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb. That is why they are before the throne of God, and they are rendering him sacred service day and night in his temple; and the One seated on the throne will spread his tent over them. They will hunger no more nor thirst anymore, neither will the sun beat down on them nor any scorching heat, because the Lamb, who is in the midst of the throne, will shepherd them and will guide them to springs of waters of life. And God will wipe out every tear from their eyes.” (Revelation 7:9-17).

The first encouraging information is that the number of the Great Crowd out of all Nations and tribes, which comes out of the Great Tribulation, will be so important that it will be impossible to quantify. A Third Part of the current humankind will survive to the Great Tribulation as Great Crowd: "And in all the land,” declares Jehovah, “Two parts in it will be cut off and perish; And the third part will be left remaining in it" (Zechariah 13:8).

The second important information is that the Great Crowd will serve to Jehovah God and His Son and Anointed King Jesus Christ, with a sacred service. So, the simple information for to come out of the Great Tribulation, we must put a sincere faith in Jehovah God and His Son Jesus Christ (exercising faith in the propitiatory sacrifice of the blood of Christ) and we must serve Them, doing their Will, written in the Bible (Serving them with sacred service). That is to get baptized in obedience to the commandments of Christ (Matthew 20:28).

An important requirement to come out of the Great Tribulation: The Baptism

The Apostle Peter and Apostle Paul, under inspiration, have summarized very well what we must do to be saved:

“Repent, therefore, and turn around so as to get your sins blotted out, so that seasons of refreshing may come from Jehovah himself” (Acts 3:19).

“And everyone who calls on the name of Jehovah will be saved. (…) Peter said to them: “Repent, and let each one of you be baptized in the name of Jesus Christ for forgiveness of your sins, and you will receive the free gift of the holy spirit. For the promise is to you and your children, and to all those who are far away, to all those whom Jehovah our God may call to himself.” And with many other words he gave a thorough witness and kept exhorting them, saying: “Get saved from this crooked generation.” So those who gladly accepted his word were baptized, and on that day about 3,000 people were added” (Acts 2:21, 38-41).

“So he asked for lights and rushed in, and seized with trembling, he fell down before Paul and Silas. 30 He brought them outside and said: “Sirs, what must I do to get saved?” 31 They said: “Believe in the Lord Jesus, and you will get saved, you and your household.” 32 Then they spoke the word of Jehovah to him together with all those in his house. 33 And he took them along in that hour of the night and washed their wounds. Then he and his entire household were baptized without delay” (Acts 16:29-33).