The word(s) "therefore" appears 67 time(s) in 66 verse(s) in Quran in Abdullah Yusuf Ali translation.

(21) therefore be patient with what they say, and celebrate (constantly) the praises of thy Lord, before the rising of the sun, and before its setting; yea, celebrate them for part of the hours of the night, and at the sides of the day: that thou mayest have (spiritual) joy.

(22) Say: "Each one (of us) is waiting: wait ye, therefore, and soon shall ye know who it is that is on the straight and even way, and who it is that has received Guidance."

(23) Not a messenger did We send before thee without this inspiration sent by Us to him: that there is no god but I; therefore worship and serve Me.

(24) Verily, this brotherhood of yours is a single brotherhood, and I am your Lord and Cherisher: therefore serve Me (and no other).

(25) Say: "What has come to me by inspiration is that your Allah is One Allah: will ye therefore bow to His Will (in Islam)?"

(26) And verily this Brotherhood of yours is a single Brotherhood, and I am your Lord and Cherisher: therefore fear Me (and no other).

(27) therefore exalted be Allah, the King, the Reality: there is no god but He, the Lord of the Throne of Honour!

(28) therefore listen not to the Unbelievers, but strive against them with the utmost strenuousness, with the (Qur'an).

(29) He therefore got away therefrom, looking about, in a state of fear. He prayed "O my Lord! save me from people given to wrong-doing."

(30) Pharaoh said: "O Chiefs! no god do I know for you but myself: therefore, O Haman! light me a (kiln to bake bricks) out of clay, and build me a lofty palace, that I may mount up to the god of Moses: but as far as I am concerned, I think (Moses) is a liar!"