"Thou therefore, my son, be strong in the grace that is in Christ Jesus." (2 Timothy 2:1)
In the Old Testament, "grace" (used 69 times) is often applied in the sense of personal favors or physical blessings. "For the LORD God is a sun and shield: the LORD will give grace and glory: no good thing will he withhold from them that walk uprightly" (Psalm 84:11). In the New Testament, however, the term (used 156 times) often seems to emphasize God's personal empowerment or the granting of His unique spiritual favor, as is clear in the wonderful passage Ephesians 2:8-9: "For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast."
Read more: http://www.icr.org/article/7348