From the perfect tense of histemi; to be stationary, i.e. (figuratively) to perseverestand (fast). see GREEK histemi
Textus Receptus Greek Text
sthkeiRom 14:4
sthkete1 Cor 16:13, Gal 5:1, Php 1:27, Php 4:1, 2 Th 2:15
sthkhteMark 11:25, 1 Th 3:8