Here is an analysis of the books in the Old Testament that are most often quoted directly in the New Testament:[1]
- Psalms (quoted 68 times in the New Testament)
- Isaiah (55 times)
- Deuteronomy (44)
- Genesis (35)
- Exodus (31)
- Leviticus (13)
- Proverbs (8)
- Zechariah (7)
- Jeremiah (5)
- Hosea (5)