When did Jesus die “the second time”?
You may be thinking of the “second death” mentioned in Revelation 2:11. And it’s made clear in Revelation 20:14-15 and 21:7-8 that this second death is the eternal damnation of hell, which those who willfully and definitively self-exclude themselves from God and his kingdom will suffer (CCC 1033-37). So each man and woman dies once and then faces his/her particular judgment (Heb. 9:27; CCC 1021-22), and then either experiences eternal life with God and the angels and saints in heaven, perhaps after being purified in Purgatory (CCC 1030-32; 1023-29), or, God forbid, suffers the second death of eternal hell.
By Tom Nash