And who knoweth # 21_ECC_02_19 # And who knoweth whether he shall be a wise [man] or a fool? yet shall he have rule over all my labour wherein I have laboured, and wherein I have showed myself wise under the sun. This [is] also vanity. 
and who knoweth # 21_ECC_08_01 # Who [is] as the wise [man]? and who knoweth the interpretation of a thing? a man's wisdom maketh his face to shine, and the boldness of his face shall be changed. 
and who knoweth # 17_EST_04_14 # For if thou altogether holdest thy peace at this time, [then] shall there enlargement and deliverance arise to the Jews from another place; but thou and thy father's house shall be destroyed: and who knoweth whether thou art come to the kingdom for [such] a time as this? 
and who knoweth # 23_ISA_29_15 # Woe unto them that seek deep to hide their counsel from the LORD, and their works are in the dark, and they say, Who seeth us? and who knoweth us? 
and who knoweth # 20_PRO_24_22 # For their calamity shall rise suddenly; and who knoweth the ruin of them both?