12:10 the spirit of grace. This is the final reference to “grace” in the Old Testament (the first is in Genesis 6:8). Despite the widespread opinion that “grace” is strictly a New Testament concept, there are at least sixty-eight occurrences of “grace” and ninety-eight of “graciously” in the Old Testament. The related concept of “lovingkindness” or “mercy” (same Hebrew word) occurs over two hundred times.
12:10 pierced. This is the great day when Christ returns in glory, and Israel will finally recognize Him as her Messiah, seeing the spear wound yet in His side (Zechariah 12:10 is quoted in John 19:37 and Revelation 1:7) and the nail prints in His hands (Zechariah 13:6). By His “Spirit of grace and of supplications” God will open their eyes and hearts, and “all Israel shall be saved” (Romans 11:26).