Those who are alive at the end of the Tribulation will be a small remnant of believers and some unbelievers. Isaiah called the reader to encourage the exhausted and feeble believers of his or her time. They would need to keep their eyes on God. God would come to take vengeance for them and to deliver them (cf. Deuteronomy 31:6-7; Deuteronomy 31:23; Joshua 1:6-7; Joshua 1:9; Joshua 1:18; Revelation 13:9-10; Revelation 14:12). He would reward them; they will enter Messiah"s millennial kingdom. [source][source][source]