Cited in sermons
P. T. O'Brien
5 sermons · All people cited
The Christian Life of the Apostle Paul
Between justification and glorification lies the life of sanctification, and in Philippians 3:12–16 the Apostle Paul names that interim existence perseverance. Paul's honest self-assessment — 'not that I have already attained or am already perfected' — anchors both the doctrine and the practice: the believer presses on, forgets what is behind, and strains toward glory not to secure justification but as a necessary consequence of having been freely justified by God's grace. The sermon grounds perseverance in the immutability of the divine decree, the intercession of Christ, and the empowering work of the Spirit, before calling the congregation to single-minded use of the ordained means of grace.
From Alienation to Reconciliation
Colossians 1:21–22 sets the alienation and enmity of sinners against the sovereign, monergistic reconciliation God effects through the incarnate death of His Son. The sermon moves through three aspects of the Colossian believers' transformation: their previous state as those alienated from God, hostile in mind, and outwardly manifesting wicked works; their present status as those God has reconciled through the physical, substitutionary death of Christ; and their future blessedness as those being presented holy, blameless, and above reproach — a goal that is the consequence of reconciliation, never its cause. Communion is the occasion for this exposition, pressing believers to remember the depth of the grace that drew them out of enmity and into fellowship with God.
The High Priest of the New Covenant
Hebrews 7:20–8:6 presents Christ as the High Priest of the New Covenant, whose priestly office rests on four pillars: a divine oath, a permanent and unchangeable priesthood, a sinless character, and a heavenly ministry in the true tabernacle. Because Christ is the surety of the better covenant — bearing the full debt of sinners in the place of finite Levitical priests who died without completing what they began — He saves completely and finally all who come to God through Him. The sermon calls both unbelievers to abandon self-reliance and bow to this all-sufficient Savior, and believers to rest their assurance not on their own performance but on the unchangeable priesthood of Christ.
Possession, Position, and Privileges of Believers, Part 2
Philippians 3:10–11 presses the believer past justification into a lifelong, deepening knowledge of Christ — specifically the power of his resurrection and the fellowship of his sufferings. Paul's ordering of resurrection before suffering is deliberate: only the power that raised Christ from the dead equips believers to endure cross-bearing in a hostile world. The sermon closes by tracing Paul's single-minded, forward-pressing posture in verses 12–14 as the pattern of sanctification, calling every justified believer to pursue the knowledge of Christ with undying intensity regardless of circumstance.
Christ's Circumcision
Colossians 2:11–12 is frequently marshalled by paedobaptists to argue that baptism has replaced circumcision as the covenant sign and therefore ought to be administered to infants, but the passage cannot bear that weight. This sermon works through three preliminary observations — the structure of covenant theology, the relationship between circumcision and baptism, and the actual point of the passage — before exegeting verses 11–12 directly. The circumcision Paul describes is spiritual regeneration performed by Christ without hands, and baptism is its retrospective public sign, not a parallel to the prospective sign of physical circumcision given to Abraham's infant sons. The sermon closes with a sharp warning against any gospel that supplements Christ's finished work, insisting that justification is an alien, forensic righteousness imputed to the believer by grace alone through faith alone in Christ alone.