en_tn_condensed/luk/01/80.md

General Information:

This tells briefly about John's growing years.

Now

This word is used here to mark a break in the main story line. Luke quickly moves from the birth of John to the beginning of his ministry as an adult.

became strong in spirit

"became spiritually mature" or "strengthened his relationship with God"

was in the wilderness

"lived in the wilderness." Luke does not say at what age John began to live in the wilderness.

until

This does not necessarily mark a stopping point. John continued to live out in the desert even after he started preaching publicly.

the day of his public appearance

"when he began to preach in public"

the day

This is used here in the general sense of "the time" or "the occasion."