Jesus said: "For My Father's will is that everyone who looks to the Son and believes in Him shall have eternal life, and I will raise him up at the last day." (John 6:40 NIV)
Jesus answered, "...My sheep listen to My voice; I know them, and they follow Me. I give them eternal life, and they shall never perish; no one can snatch them out of My hand. My Father, who has given them to Me, is greater than all; no one can snatch them out of My Father's hand. I and the Father are one." (John 10:27-30 NIV)
"And now you also have heard the truth, the Good News that God saves you. And when you believed in Christ, He identified you as His own by giving you the Holy Spirit, Whom He promised long ago. The Spirit is God's guarantee that He will give us everything He promised and that He has purchased us to be His own people. This is just one more reason for us to praise our glorious God." (Ephesians 1:13-14 NLT)
"That if you confess with your mouth, "Jesus is LORD," and believe in your heart that God raised Him from the dead, you will be saved. For it is with your heart that you believe and are justified, and it is with your mouth that you confess and are saved. As the Scripture says, "Anyone who trusts in Him will never be put to shame." For there is no difference between Jew and Gentile--the same LORD is LORD of all and richly blesses all who call on Him, for, "Everyone who calls on the name of the LORD will be saved.""
(Romans 10:9-13 NIV)
Jesus said: "I am the resurrection and the life. He who believes in Me will live, even though he dies; and whoever lives and believes in Me will never die..."
(John 11:25-26 NIV)