μεριμνᾶτε [6 verses](2nd pl pres imperat act) "Take...thought" is merimanao which means to "care for", "be anxious about", "meditate upon", "to be cumbered with many cares,"and "to be treated with anxious care [passive]." -- "Take," with the word "thought" below,  is a Greek verb that means "to care for", "be anxious about," and "to meditate upon." It has most of the sense of the way we use "worry" in English. It is plural and in the form of a command.