Matthew 10:28, 32-33, 39

Do not be afraid of those who kill the body but cannot kill the soul; but rather be afraid of Him who can destroy both soul and body in hell.

“Therefore, the one who confesses and acknowledges Me before men [as Lord and Savior, affirming a state of oneness with Me], that one I will also confess and acknowledge before My Father who is in heaven. But the one who denies and rejects Me before men, that one I will also deny and reject before My Father who is in heaven.

Whoever finds his life [in this world] will [eventually] lose it [through death], and whoever loses his life [in this world] for My sake will find it [that is, life with Me for all eternity]. [Matt 16:25; Mark 8:35; Luke 9:24; 17:33; John 12:25]