15:5 Does this mean that Christians must be in complete agreement on all points of doctrine?
15:5 Does this mean that Christians must be in complete agreement on all points of doctrine?
No, Paul is not teaching here that Christians must be in complete agreement on all points of doctrine. In this context, to be likeminded toward one another means that both strong and weak Christians, despite their differing views on the non-essential issues of Ro 14, are to pursue loving, spiritual harmony in regard to matters on which scripture is silent. Then every Christian can glorify God with one voice (CP Ro 14:19-15:7).
Christians are to receive one another into the church as Christ received them - both Jews and Gentiles - to God's glory (CP 15:8-12).
These Old Testament prophecies all prove that both Jews and Gentiles were to become one in the worship of God through Christ, being equal in His mercies and grace, the same as both strong and weak Christians. Psa 18:49 is quoted in V9; De 32:43 in V10; Psa 117:1 in V11 and Isa 11:10 in V12 (CP Psa 18:49; De 32:43; Psa 117:1; Isa 11:10 with 1Cor 12:13; Ga 3:28; Col 3:11).
See also comments on 1Cor 1:10, and author's study Paul the Apostle - a Chosen Vessel Unto God in his book Advanced Studies in the Christian Faith (Volume 2).