Psalm 4:7-8

You have filled my heart with greater joy than when their grain and new wine abound. I will lie down and sleep in peace, for you alone, O LORD, make me dwell in safety.

You have filled my heart
Acts 14:17 "Yet he has not left himself without testimony: He has shown kindness by giving you rain from heaven and crops in their seasons; he provides you with plenty of food and fills your hearts with joy."
Proverbs 4:23 Above all else, guard your heart, for it is the wellspring of life.

with great joy
Isaiah 9:3 You have enlarged the nation and increased their joy; they rejoice before you as people rejoice at the harvest, as men rejoice when dividing the plunder.
Isaiah 35:10 ... and the ransomed of the LORD will return. They will enter Zion with singing; everlasting joy will crown their heads. Gladness and joy will overtake them, and sorrow and sighing will flee away.
Isaiah 65:14 "My servants will sing out of the joy of their hearts, but you (who forsake the LORD) will cry out from anguish of heart and wail in brokenness of spirit."
Isaiah 65:18 "But be glad and rejoice forever in what I will create, for I will create Jerusalem to be a delight and its people a joy."

than when their grain and new wine abound
Genesis 27:28 "May God give you of heaven's dew and of earth's richness--an abundance of grain and new wine."
Deuteronomy 28:51 They (a nation from far away) will devour the young of your livestock and the crops of your land until you are destroyed. They will leave you no grain, new wine or oil, nor any calves of your herds or lambs of your flocks until you are ruined.

I will lie down and sleep
Leviticus 26:6 "'I will grant peace in the land, and you will lie down and no one will make you afraid. I will remove savage beasts from the land, and the sword will not pass through your country.'"

in peace
Numbers 6:26 "... the LORD turn his face toward you and give you peace."
Job 11:18 "You will be secure, because there is hope; you will look about you and take your rest in safety."

for you alone, O LORD, make me dwell in safety
Deuteronomy 33:28 "So Israel will live in safety alone; Jacob's spring is secure in a land of grain and new wine, where the heavens drop dew."
Jeremiah 32:37 "I will surely gather them from all the lands where I banish them in my furious anger and great wrath; I will bring them back to this place and let them live in safety."

(Parentheses are mine)

NOTES:
Psalm 3:5-6

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.