The “Saints” were Faithful Christians

Revelation 13:7, 10 It was given to him to make war with the saints, and to overcome them. . . . If anyone is to go into captivity, he will go into captivity. If anyone is to be killed with the sword, he must be killed. Here is the endurance and the faith of the saints.

Revelation 14:12 Here is the patience of the saints, [all of this is the same expression as the last sentence above] those who keep the commandments of God, and the faith of Jesus.

Revelation 17:6 I saw the woman drunken with the blood of the saints, and with the blood of the martyrs of Jesus. . . .

(Emphasis mine.)