ἐστήρικται, [2 verses](verb 3rd sg perf ind mp) "There is...fixed" is stērizō, which means to "make fast," "prop," "fix"​, and "support." In the passive, "to be firmly set or fixed," and "stand fast." Metaphorically, it means to  "confirm," and "establish." -- "Fixed" is a Greek verb that means to "make fast," "prop," "fix"​, and "support."  Jesus only uses this word twice. It is the word that means setting a stone in the ground so it won't move and putting a rainbow in the clouds, but metaphorically, it means "to establish." It is not active or passive, but the form where the subject acts for or on itself. So, "has established itself" or "has established for itself."