No you are making the gift a matter of reward, thats not giving a gift, but making an offer, thats not what the scripture says now is it ?

rom 6:

23For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.

Those who believe or trust in Jesus christ give evidence they have been given eternal life as a gift..

Jn 17:

2As thou hast given him power over all flesh, that he should give eternal life to as many as thou hast given him.

Now are you denying that Jesus has done this?