Love God and have the witness of him, his word, in your heart.

Only take great care to do the orders and the law which Moses, the Lord’s servant, gave you; to have love for the Lord your God and to go in all his ways; and to keep his laws and to be true to him and to be his servants with all your heart and with all your soul.
Joshua 22:5
For we said to ourselves, If they say this to us or to future generations, then we will say, See this copy of the Lord’s altar which our fathers made, not for burned offerings or offerings of beasts, but for a witness between us and you.
Joshua 22:28

The Lord Keeps Every Promise He Makes

The Lord kept faith with the house of Israel about all the good which he said he would do for them, and all his words came true.
Joshua 21:45

1)Mat 7:7 Mat 7:7 Make a request, and it will be answered; what you are searching for you will get; give the sign, and the door will be open to you:
Mat 7:8 Because to everyone who makes a request, it will be given; and he who is searching will get his desire, and to him who gives the sign, the door will be open.

Jos 21:44 And the Lord gave them peace on every side, as he had said to their fathers: all those who were against them gave way before them, for the Lord gave them all up into their hands.
Jos 21:45 The Lord kept faith with the house of Israel about all the good which he said he would do for them, and all his words came true.

References
1Mat 7:7 Mat 7:7 Make a request, and it will be answered; what you are searching for you will get; give the sign, and the door will be open to you:
Mat 7:8 Because to everyone who makes a request, it will be given; and he who is searching will get his desire, and to him who gives the sign, the door will be open.

Be true to the Lord your God with all your heart.

My brothers, however, who went up with me, made the heart of the people like water: but I was true to the Lord with all my heart.
Joshua 14:8

And on that day Moses took an oath, saying, Truly the land where your feet have been placed will become a heritage for you and your children for ever, because you have been true to the Lord your God with all your heart.
Joshua 14:9

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