18 because we are not looking at what can be seen but at what cannot be seen. For what can be seen is temporary, but what cannot be seen is eternal.
18 whileD8418 we look not at the things that are seen, but at the things that are not seen; for the things that are seen [are] for a time, but those that are not seen eternal.
while - 'while' has not the sense of time here. The literal translation, 'we not looking,' would convey a somewhat causative sense, which is not the force of the passage.
18 While we look not at the things which are seen, but at the things which are not seen: for the things which are seen [are] temporal; but the things which are not seen [are] eternal.