Verses with the word marrow in the Old Testament (4 verses):

Job 21:24
His breasts are full of milk, and his bones are moistened with marrow.

Psalms 63:5
My soul shall be satisfied as with marrow and fatness; and my mouth shall praise thee with joyful lips:

Proverbs 3:8
It shall be health to thy navel, and marrow to thy bones.

Isaiah 25:6
And in this mountain shall the LORD of hosts make unto all people a feast of fat things, a feast of wines on the lees, of fat things full of marrow, of wines on the lees well refined.