Assurance: The resurrection of Jesus (Acts 17:31) is the "assurance" (Gr.
pistis, generally rendered "faith") or pledge God has given that
his revelation is true and worthy of acceptance. The "full
assurance [Gr. plerophoria, 'full bearing'] of faith" (Heb.
10:22) is a fulness of faith in God which leaves no room for
doubt. The "full assurance of understanding" (Col. 2:2) is an
entire unwavering conviction of the truth of the declarations of
Scripture, a joyful steadfastness on the part of any one of
conviction that he has grasped the very truth. The "full
assurance of hope" (Heb. 6:11) is a sure and well-grounded
expectation of eternal glory (2 Tim. 4:7, 8). This assurance of
hope is the assurance of a man's own particular salvation.
This infallible assurance, which believers may attain unto as
to their own personal salvation, is founded on the truth of the
promises (Heb. 6:18), on the inward evidence of Christian
graces, and on the testimony of the Spirit of adoption (Rom.
8:16). That such a certainty may be attained appears from the
testimony of Scripture (Rom. 8:16; 1 John 2:3; 3:14), from the
command to seek after it (Heb. 6:11; 2 Pet. 1:10), and from the
fact that it has been attained (2 Tim. 1:12; 4:7, 8; 1 John 2:3;
4:16).
This full assurance is not of the essence of saving faith. It
is the result of faith, and posterior to it in the order of
nature, and so frequently also in the order of time. True
believers may be destitute of it. Trust itself is something
different from the evidence that we do trust. Believers,
moreover, are exhorted to go on to something beyond what they at
present have when they are exhorted to seek the grace of full
assurance (Heb. 10:22; 2 Pet. 1:5-10). The attainment of this
grace is a duty, and is to be diligently sought.
"Genuine assurance naturally leads to a legitimate and abiding
peace and joy, and to love and thankfulness to God; and these
from the very laws of our being to greater buoyancy, strength,
and cheerfulness in the practice of obedience in every
department of duty."
This assurance may in various ways be shaken, diminished, and
intermitted, but the principle out of which it springs can never
be lost. (See FAITH T0001302.)