Quick answer
Thekla is a girl name meaning "glory of God".
Meaning and history
This name comes from the ancient Greek name Θεόκλεια (Theokleia), which meant "glory of God" from the Greek elements θεός ( theos ) meaning "god" and κλέος ( kleos ) meaning "glory". This was the name of a 1st-century saint, appearing (as Θέκλα ) in the apocryphal Acts of Paul and Thecla. The story tells how Thecla listens to Paul speak about the virtues of chastity and decides to remain a virgin, angering both her mother and her suitor.
Notes and context
Usage: german, greek, late greek | Greek: Θέκλα