Yes! You can... but you WON'T want to! That's the power of becoming Born Again! God doesn't just save you and throw you back into the world to fend for yourself and try to live as holy as you can by your own will power and if you sin big time or too many times he takes his Gift of Salvation back from you and sends you to Hell for not being strong enough. That's exactly as absurd as it sounds! What do you think this is... some kind of game that God is playing with people's lives??? What kind of God do you think He is??? If you know anything about God at all you will know that He's NOT a God of hit and miss or luck and chance. He's a God of certainty and guarantee... concerning His Promises, His Yes means Yes without contradiction. For God's Son, Jesus the Messiah, who was preached among you by us... was not "Yes" and "No." But with him it is always "Yes." For all God's promises are "Yes" in him. 2 Corinthians 1:19-20 By the way... that's another reason you cannot "Give up" your Salvation. To return a Gift to someone, the Giver has to receive it back from you and God never will. You cannot return something to the original Giver, if he will never receive it back from you. Salvation is a GIFT and all God's Gifts are Perfect and Permanent. Perfect - Every good and perfect gift comes down from the Father. James 1:17 Permanent - God’s gifts and his call can never be withdrawn. Romans 11:29 The Amplified Bible gives us more details... Every good thing given and every perfect gift is from above; it comes down from the Father of lights [the Creator and Sustainer of the heavens], in whom there is no variation [no rising or setting] or shadow cast by His turning [for He is perfect and never changes]. James 1:17 (AMP) For the gifts and the calling of God are irrevocable [for He does not withdraw what He has given, nor does He change His mind about those to whom He gives His grace or to whom He sends His call]. Romans 11:29 (AMP) You cannot lose it. It cannot be stolen from you.