And he (Jehovah) gave Joshua the son of Nun a charge. — This is the first record of God’s direct communion with Joshua. He was with Moses on the mount during the first forty days, and “departed not out of the Tabernacle” when they came down (Exodus 24:13; Exodus 33:11). But we have no note of any Divine communication made to Joshua apart from Moses before this. It ratifies Joshua’s appointment as leader of Israel.
Be strong... — Comp. Joshua 1:2; Joshua 1:6.