Hi new2calvin, you ask, "How are you sure Christ died for the WHOLE world?"
JN 3:16 "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. For God did not send his Son into the world to condemn the world, but to save the world through him."
JN 4:42 "They said to the woman, "We no longer believe just because of what you said; now we have heard for ourselves, and we know that this man really is the Savior of the world."
JN 6:32 Jesus said to them, "I tell you the truth, it is not Moses who has given you the bread from heaven, but it is my Father who gives you the true bread from heaven. For the bread of God is he who comes down from heaven and gives life to the world."
JN 6:51 I am the living bread that came down from heaven. If anyone eats of this bread, he will live forever. This bread is my flesh, which I will give for the life of the world."
When Jesus spoke again to the people, he said, "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life."
JN 12:47 "As for the person who hears my words but does not keep them, I do not judge him. For I did not come to judge the world, but to save it
JN 17:20 "My prayer is not for them alone. I pray also for those who will believe in me through their message, that all of them may be one, Father, just as you are in me and I am in you. May they also be in us so that the world may believe that you have sent me. I have given them the glory that you gave me, that they may be one as we are one: I in them and you in me. May they be brought to complete unity to let the world know that you sent me and have loved them even as you have loved me
RO 5:18 Consequently, just as the result of one trespass was condemnation for all men, so also the result of one act of righteousness was justification that brings life for all men
RO 8:31 What, then, shall we say in response to this? If God is for us, who can be against us? He who did not spare his own Son, but gave him up for us all1 TI 2:3 This is good, and pleases God our Savior, who wants all men to be saved and to come to a knowledge of the truth. For there is one God and one mediator between God and men, the man Christ Jesus, 6 who gave himself as a ransom for all men--the testimony given in its proper time
Just the beginning.....
Blessings, Pete.