groweth

From grow +‎ -eth, the archaic third-person singular present tense suffix

groweth

1. (archaic) Third-person singular simple present indicative form of grow
   • 1611, The Holy Bible, […] (King James Version), imprinted at London: By Robert Barker, […], OCLC 964384981, 2 Thessalonians 1:3:

     We are bound to thank God always for you, brethren, as it is meet, because that your faith groweth exceedingly, and the charity of every one of you all toward each other aboundeth;