58:16 they have made their oaths a cover [for their falseness], and thus they turn others away from the path of God:* hence, shameful suffering awaits them.
Muhammad Asad (The Message Of Quran)
Dictionaries
Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
In time We shall make them fully understand* Our messages [through what they perceive] in the utmost horizons [of the universe] and within themselves,* so that it will become clear unto them that this [revelation] is indeed the truth. [Still,] is it not enough [for them to know] that thy Sustainer is witness unto everything?*