Eternal life has never ever in the history of the scriptures been offered, its always been promised to be given Titus 1:1-2
Paul, a servant of God, and an apostle of Jesus Christ, according to the faith of God's elect, and the acknowledging of the truth which is after godliness;
2 In hope of eternal life, which God, that cannot lie, promised before the world began;
Gal 3:17-18
17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.
18 For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.
The inheritance is eternal life
Jn 17:2
2 As thou hast given him power over all flesh, that he should give or offer eternal life to as many as thou hast given him.
1 Jn 2:25
And this is the promise that he hath promised us, even eternal life.
Its you who lack understanding and spreading a false gospel. May God be pleased to have mercy on you