Be strong and of a good courage, fear not, nor be afraid of them: for the LORD thy God, he it is that doth go with thee; he will not fail thee, nor forsake thee. Be strong - חזקו chizku, the same word that is used Exodus 4:21 (note), Exodus 9:15 (note), for hardening Pharaoh's heart. See the notes there. The Septuagint, in this and the following verse, have, Ανδριζου και ισχυε, Play the man, and be strong; and from this St. Paul seems to have borrowed his ideas, 1 Corinthians 16:13 : Στηκετε εν τῃ πιστει· ανδριζεσθε, κρατιουσθε: Stand firm in the faith; play the man - act like heroes; be vigorous.
Related Commentaries of Deuteronomy 31:6
Deuteronomy 31:6
6 Be strong and of a good courage, fear not, nor be afraid of them: for the LORD thy God, he it is that doth go with thee; he will not fail thee, nor forsake thee.