Instruction

Psalm 19:7-8
The law of the LORD is perfect, converting the soul;
The testimony of the LORD is sure, making wise the simple.
The statutes of the LORD are right, rejoicing the heart;
The commandments of the LORD are pure, enlightening the eyes.

So,
His instructions are:
perfect
sure
right
pure
bright
trustworthy
clear

And,
His instructions will:
restore the soul
make wise the simple
revive the soul
bring joy to the heart
give insight to living
convert the soul

Psalm 119:105
Your word is a lamp unto my feet and a light unto my path.

Praise you Lord for your word. For Your word is alive and full of power (making it active, operative, energizing and effective); it is sharper than any two edged sword, penetrating to the dividing line of the breath of life (soul) and (the immortal) spirit, and of joints and marrow (of the deepest parts of our nature), exposing and sifting and analyzing and judging the very thoughts and purposes of our heart. Hebrews 4:12 AMP