The word(s) "conceals" appears 3 time(s) in 3 verse(s) in Quran in Saheeh International translation.

(1) Or do you say that Abraham and Ishmael and Isaac and Jacob and the Descendants were Jews or Christians? Say, "Are you more knowing or is Allah?" And who is more unjust than one who conceals a testimony he has from Allah? And Allah is not unaware of what you do.

(2) And if you are on a journey and cannot find a scribe, then a security deposit [should be] taken. And if one of you entrusts another, then let him who is entrusted discharge his trust [faithfully] and let him fear Allah, his Lord. And do not conceal testimony, for whoever conceals it - his heart is indeed sinful, and Allah is Knowing of what you do.

(3) It is the same [to Him] concerning you whether one conceals [his] speech or one publicizes it and whether one is hidden by night or conspicuous [among others] by day.