This word to Joshua is often quoted; it is the basis of that New Testament word “He hath said, I will never leave thee, nor forsake thee.”
Beloved, a life of warfare is before us, but the Lord of Hosts is with us. Are we called to lead a great but fickle people? This promise guarantees us all the wisdom and prudence that we shall need. Have we to contend with cunning and powerful enemies? Here is strength and valor, prowess and victory. Have we a vast heritage to win? By this sign we shall achieve our purpose; the Lord Himself is with us.
It would be woe to us indeed if Jehovah could fail us; but, as this can never be, the winds of disquietude are laid to sleep in the caverns of divine faithfulness. On no one occasion will the Lord desert us. Happen what may, He will be at our side. Friends drop from us, their help is but an April shower; but God is faithful, Jesus is the same forever, and the Holy Spirit abideth in us.
Come, my heart, be calm and hopeful today. Clouds may gather, but the Lord can blow them away. Since God will not fail me, my faith shall not fail; and as He will not forsake me, neither will I forsake Him. Oh, for a restful faith!
[from Faith’s Checkbook by Charles H. Spurgeon]