always: at all times, on every occasion, without exception
This is a plain time-word meaning "always." It covers the whole span of a situation and every instance within it: what is true here holds at all times, on each occasion, with no gap and no exception. It is built from the Greek word for "all" joined to a time-marker, so its force is literally "at all whens."
In practice it does two closely related jobs, and context decides which is uppermost. Sometimes it stresses unbroken continuity, something that never stops: "you always have the poor with you," "he always lives to plead for them." Sometimes it stresses every separate occasion, something done each time it comes up: "pray always," "let your speech be gracious at all times." These are not two different meanings but two shades of the one idea; English "always" carries them both the same way.
The word is a favorite of Paul, who reaches for it again and again in his opening thanksgivings, telling a church that he thanks God for them "always" in his prayers. There it underlines the constancy of his care rather than marking any special theological point. The word itself stays simple; its weight comes from what it is attached to.