>Having moments of deja vu, even moments that I’m 100% certain I’ve had in dreams years ago.
Happens to everyone.
>What type of implication does this have, and how should I consider it as a Christian?
It implies that the human brain is always trying to identify situations with previous memories/dreams and it winnie the poohs up the whole process.
There's nothing supernatural in this one therefore a Christian has nothing to worry about them.