|Noah Webster's Dictionary|
1. (n.) The act of confirming or strengthening; the act of establishing, ratifying, or sanctioning; as, the confirmation of an appointment.
2. (n.) That which confirms; that which gives new strength or assurance; as to a statement or belief; additional evidence; proof; convincing testimony.
3. (n.) A rite supplemental to baptism, by which a person is admitted, through the laying on of the hands of a bishop, to the full privileges of the church, as in the Roman Catholic, the Episcopal Church, etc.
4. (n.) A conveyance by which a voidable estate is made sure and not voidable, or by which a particular estate is increased; a contract, express or implied, by which a person makes that firm and binding which was before voidable.
Int. Standard Bible Encyclopedia
kon-furm, konfer-ma'-shun: In the Old Testament represented by several Hebrew words, generally with reference to an increase of external strength, as "c. the feeble knees" (Isaiah 35:3); "c. the kingdom" (2 Kings 15:19); "c. inheritance" (Psalm 68:9). In the New Testament, this external, objective sense is expressed by bebaioo, as in Mark 16:20 Romans 15:8. The strengthening of mind, purpose, conviction, i.e. the inner or subjective sense (Acts 14:22; Acts 15:32, 41) corresponds to episterizo. Used also of ratifying or making valid (kuroo) a covenant (Galatians 3:15). The noun is used in the second sense (Hebrews 6:16 Philippians 1:7). Confirmation, the rite, in some denominations, of admission to the full communion of the church, which the Roman church has elevated to the place of a sacrament, has only ecclesiastical, but no Scriptural, authority. It is grounded, however, in the Scriptural precedent of the laying on of hands after baptism.
See HANDS, IMPOSITION, LAYING ON OF.
H. E. Jacobs
Confirmation (3 Occurrences)
2 Corinthians 1:20 For all the promises of God, whatever their number, have their confirmation in Him; and for this reason through Him also our "Amen" acknowledges their truth and promotes the glory of God through our faith. (WEY)
Philippians 1:7 It is even right for me to think this way on behalf of all of you, because I have you in my heart, because, both in my bonds and in the defense and confirmation of the Good News, you all are partakers with me of grace. (WEB KJV ASV DBY WBS YLT NAS RSV)
Hebrews 6:16 For men indeed swear by a greater one, and in every dispute of theirs the oath is final for confirmation. (WEB KJV WEY ASV WBS YLT NAS RSV)