Yehoshua 1:8

8 This Sefer HaTorah shall not depart out of thy mouth; but thou shalt meditate on it yomam valailah so that thou mayest be shomer to do according to all that is written therein; for then thou shalt make thy derech prosperous, and then thou shalt have good success.

Yehoshua 1:8 Meaning and Commentary

Joshua 1:8

This book of the law shall not depart out of thy mouth
He was often to read it, frequently repeat it, and speak of it, to refresh his own memory with it, and the memory of those about him. Jarchi restrains it to the book of Deuteronomy now before him:

but thou shalt meditate therein day and night;
whenever he had any leisure from the important business of his office, whether by day or night, see ( Psalms 1:2 ) ;

that thou mayest observe to do according to all that is written
therein;
which frequent speaking of it, and constant meditation on it, would lead unto:

for then thou shalt make thy way prosperous, and then thou shalt have
good success;
in his wars with the Canaanites.

Yehoshua 1:8 In-Context

6 Chazak! (be strong!) And be of good courage: for unto HaAm Hazeh shalt thou divide for a nachalah HaAretz, which I swore unto their avot to give them.

7 Only chazak (be strong) and very courageous, that thou mayest be shomer to do according to kol HaTorah, which Moshe Avdi commanded thee; turn not from it to the yamin or to the semol, in order that thou mayest succeed everywhere thou goest.

8 This Sefer HaTorah shall not depart out of thy mouth; but thou shalt meditate on it yomam valailah so that thou mayest be shomer to do according to all that is written therein; for then thou shalt make thy derech prosperous, and then thou shalt have good success.

9 Have not I commanded thee? Chazak! And be of good courage; be not afraid, neither be thou dismayed; for Hashem Eloheicha is with thee everywhere thou goest.

10 Then Yehoshua commanded the Shotrei HaAm, saying,