1/. What is essential for salvation?

Can Grandma maybe ‘make it’ on a second chance; on the ‘Second Resurrection’ just because she is a lovely old lady, but has not repented, been baptised and/or Spirit Filled?
Revelation 20:6
Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years
The Bible talks of a first resurrection and a second death, and I do not say that by saying a ‘first’ it does not imply a second – BUT the Bible does not actually mention a ‘second resurrection.’ I am surprised how many people talk about missing the 1st, and then hoping for a 2nd chance! Read Revelations 20:11-15 again- you would not say it was full of much promise, if any!! It mainly talks about missing out – more than some having a 2nd chance. “… death and hell were cast into the lake of fire – whosoever were not found…cast into the lake of fire.” These verses must be read in conjunction with 1 Peter 4:17-18, where we realize those that do it right are barely saved “…by the skin of their teeth!” Our emphasis is on getting people to place all their hope [including Grandma’s] in the first resurrection via Acts 2:37-38!!