נסןףךבספוסו́ש
proskartereō
pros-kar-ter-eh'-o
From G4314 and G2594; to be earnest towards , that is, (to a thing) to persevere , be constantly diligent, or (in a place) to attend assiduously all the exercises, or (to a person) to adhere closely to (as a servitor): - attend (give self) continually (upon), continue (in, instant in, with), wait on (continually).
LXX related word(s)
H2388 chazaq hithpa.