The word(s) "mysteries" appears 7 time(s) in 7 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) And he raised his parents high on the throne (of dignity), and they fell down in prostration, (all) before him. He said: "O my father! this is the fulfilment of my vision of old! Allah hath made it come true! He was indeed good to me when He took me out of prison and brought you (all here) out of the desert, (even) after Satan had sown enmity between me and my brothers. Verily my Lord understandeth best the mysteries of all that He planneth to do, for verily He is full of knowledge and wisdom.

(2) Seest thou not that Allah sends down rain from the sky, and forthwith the earth becomes clothed with green? for Allah is He Who understands the finest mysteries, and is well-acquainted (with them).

(3) "O my son!" (said Luqman), "If there be (but) the weight of a mustard-seed and it were (hidden) in a rock, or (anywhere) in the heavens or on earth, Allah will bring it forth: for Allah understands the finest mysteries, (and) is well-acquainted (with them).

(4) And recite what is rehearsed to you in your homes, of the Signs of Allah and His Wisdom: for Allah understands the finest mysteries and is well-acquainted (with them).

(5) Should He not know,- He that created? and He is the One that understands the finest mysteries (and) is well-acquainted (with them).

(6) "He (alone) knows the Unseen, nor does He make any one acquainted with His mysteries,-

(7) "That He may know that they have (truly) brought and delivered the Messages of their Lord: and He surrounds (all the mysteries) that are with them, and takes account of every single thing."