φροντίζω G5431
phrontízō · fron-tid'-zo · Verb
from a derivative of φρήν; to exercise thought, i.e. be anxious:--be careful.
1 Occurrence in the King James Bible
Titus 3:8This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.