There are in all two hundred and eighty-three direct quotations from the Hebrew Bible (Old Testament) in the New Testament.
In about ninety instances, the Septuagint is literally quoted. In around eighty further instances, the quote is altered in some way. For example, at Matthew 21:42 Jesus says "Did ye never read in the scriptures that the stone which the builders refused is become the head stone of the corner?" - a reference to Psalm 118:22. Likewise, Mark 12:10. The Epistle of Jude quotes the pseudepigraphal Book of Enoch (1 Enoch 1:9) and the Assumption of Moses.
Other quotations are sometimes made directly from the Hebrew text (e.g. Matthew 4:15–16, John 19:37, 1 Corinthians 15:54).
When the New Testament was written, the Old Testament was not divided into chapters and verses, and there is therefore no uniform standard for these quotes and the authors had to provide contextual references:
This article incorporates text from a publication now in the public domain: Easton, Matthew George (1897). "article name needed". Easton's Bible Dictionary (New and revised ed.). T. Nelson and Sons.