It is Christ's death on Calvary's cross -- THAT AND THAT ALONE -- which atones for the sin of the entire human race. While His death for sin is universal in scope as far as atonement for sin, anyone who desires to be saved must appropriate (receive) that salvation on a personal basis; that is, salvation is not automatically conferred upon every man, woman, and child, simply because Jesus has paid the price for it with His death. You must personally believe in Him, confess that he is Lord, and receive Him as your savior. Believing in Jesus, in terms of Who He Is, means that intellectually you understand that He is God, as well as being the Son of Man (for so He called Himself). He is God the Son, the Second Person of the Triune Godhead. He is One with The Father. He is NOT "Lucifer's spirit-brother" or any other such nonsense. Jesus is not a created being, as Lucifer is. Jesus IS The Creator. He has always existed, since "before eternal times". In the beginning was Jesus, and Jesus was with God, and Jesus was God (John 1:1).
Who Raised Jesus From the Dead?
*GALATIANS 1:1 . . . God the Father, who raised him from the dead;) {cf. 1 Thess 1:10}
<>ROMANS 8:11 . . . the Spirit of him that raised up Jesus from the dead dwell in you, . . .
+JOHN 2:19 Jesus answered and said unto them, Destroy this temple, and in three days I will raise it up.