You are experiencing what Carl Jung called "synchronicities". They are eruptions of spiritual messages from the unconscious into the conscious mind of someone in order to help him or her
advance in the earthly journey towards God. 27 is the largest of the integers making up Plato's Lambda:
..............1
.............2..3
............4....9
...........8......27​.
This is part of a set of ten numbers that embody the divine paradigm, for example, defining the tone ratios of all notes of the Pythagorean musical scale. If you want to understand some of this, study article 12 at
[link to smphillips.8m.com]
27 has much significance in sacred geometries, but I cannot elaborate here.