Mt 24:24, Mk 13:22, Gal 1:6-9, Acts 4:11-12
In the Old Testament, those who discouraged the Israelites from believing in God were stoned to death. (Deut 13:10)
Deut 13:10 And thou shalt stone him with stones, that he die; because he hath sought to thrust thee away from the Lord thy God, which brought thee out of the land of Egypt, from the house of bondage.
Even now, false Christs and false prophets are deceiving God's chosen ones from believing that Jesus is the Christ. (Mt 24:24, Mark 13:22)
Mt 24:24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
Mark 13:22 For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.
There is no other gospel than the gospel that Jesus is the Christ. Those who preach another gospel will be cursed. (Gal 1:6-9)
Gal 1:6 I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel: 7 Which is not another; but there be some that trouble you, and would pervert the gospel of Christ. 8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. 9 As we said before, so say I now again, if any man preach any other gospel unto you than that ye have received, let him be accursed.
There is no other way to salvation than to believe in Jesus as the Christ. (Acts 4:11-12)
Acts 4:11 This is the stone which was set at nought of you builders, which is become the head of the corner. 12 Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.