A lesson on prioritizing the truth of the Gospel over unity, knowing that if we prioritize unity over truth, we'll have neither truth nor unity. The sermon centers on the necessity of preserving the purity of the gospel, drawing from Galatians 2 to affirm that salvation is by grace alone, through faith alone, in Christ alone—never compromised by human works or traditions. It uses the collapse of the Tacoma Narrows Bridge as a metaphor for how unity without truth leads to spiritual ruin, illustrating how Paul's journey to Jerusalem with Titus—his uncircumcised Gentile companion—proved that the gospel must not be altered, even for the sake of harmony. The passage underscores that true fellowship is rooted in shared allegiance to the apostolic gospel, not human agreement, and warns against modern distortions like legalism, easy believism, or works-based justification, all of which undermine the cross. The sermon calls believers to guard the gospel with vigilance, rejecting any addition to Christ's finished work, and to cherish unity only when grounded in the unchanging truth of grace, for it is the power of God unto salvation.