According to to the Bible, physical death is a transition and not the end.
John 5:24 “ Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life.”
This verse indicates the confident hope that the person who was believed in Jesus Christ enjoys.
Daniel not only talks about the hope the believer has, but warns the person who rejects Jesus Christ of eternal judgment.
As Daniel 12:2 explains, ”…those who sleep in the dust of the earth shall awake, Some to everlasting life, Some to shame and everlasting contempt”
I hope this short answer to the question “What is Death” has helped you prepare for this transition.