Deuteronomy 30:14

14But the word is very near you. It is in your mouth and in your heart, so that you can do it.

Joshua 1:8

8This Book of the Law shall not depart from your mouth, but ayou shall meditate on it day and night, so that you may be careful to do according to all that is written in it. For then you will make your way prosperous, and then you will have good success.

Isaiah 59:21

21“And as for me, bthis is my covenant with them,” says the Lord: “My Spirit that is upon you, cand my words that I have put in your mouth, shall not depart out of your mouth, or out of the mouth of your offspring, or out of the mouth of your children’s offspring,” says the Lord, “from this time forth and forevermore.”

Romans 10:8

8But what does it say? d“The word is near you, in your mouth and in your heart” (that is, the word of faith that we proclaim);
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