Where does the Bible say “the joy of the Lord is your strength”?
It is in Nehemiah 8:10 · King James Version
«Then he said unto them, Go your way, eat the fat, and drink the sweet, and send portions unto them for whom nothing is prepared: for this day is holy unto our Lord: neither be ye sorry; for the joy of the Lord is your strength.»Read the chapter Nehemiah 8 →
See also
Psalms 28:7
The Lord is my strength and my shield; my heart trusted in him, and I am helped: therefore my heart greatly rejoiceth; and with my song will I praise him.
Isaiah 40:31
But they that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.