Ephesians 4:5

“One Lord, &c.] The Lord Jesus Christ, who, by right of creation, is Lord of all; and by right of marriage, and redemption, is the one and only Lord of his church and people; he has betrothed them to himself, and is their husband, and so their Lord, whom they are to worship and obey; he has redeemed them, he has bought them with the price of his blood, and therefore they are not their own, but his, and should glorify him both with their bodies and souls, which are his; he is the head of his body the church, the King of saints, and Father and master of the family named of him, and therefore they ought to agree among themselves, and not be many masters, and usurp a domination over one another.…”

“Similarly "faith" and "baptism" (the sacramental seal of faith) are connected (Mar 16:16; Col 2:12). Compare Co1 12:13, "Faith" is not here that which we believe, but the act of believing, the mean by which we apprehend the "one Lord." "Baptism" is specified, being the sacrament whereby we are incorporated into the "one body." Not the Lord's Supper, which is an act of matured communion on the part of those already incorporate, "a symbol of union, not of unity" [ELLICOTT]. In Co1 10:17, where a breach of union was in question, it forms the rallying point [ALFORD]. There is not added, "One pope, one council, one form of government" [Cautions for Times]. The Church is one in unity of faith (Eph…”

“One Lord - This evidently refers to the Lord Jesus. The “Spirit” is mentioned in the previous verse; the Father in the verse following. On the application of the word “Lord” to the Saviour, see the notes on Acts 1:24. The argument here is, that there ought to be unity among Christians, because they have one Lord and Saviour. They have not different Saviours adapted to different classes; not one for the Jew and another for the Greek; not one for the rich and another for the poor; not one for the bond and another for the free. There is but one. He belongs in common to all as their Saviour; and he has a right to rule over one as much as over another. There is no better way of promoting unity…”

“One outward baptism. Ephesians 4:6”

“One Lord: Act 2:36, Act 10:36; Rom 14:8, Rom 14:9; Co1 1:2, Co1 1:13, Co1 8:6, Co1 12:5; Phi 2:11, Phi 3:8 one faith: Eph 4:13; Rom 3:30; Co2 11:4; Gal 1:6, Gal 1:7, Gal 5:6; Tit 1:1, Tit 1:4; Heb 13:7; Jam 2:18; Pe2 1:1; Jde 1:3, Jde 1:20 one baptism: Mat 28:19; Rom 6:3, Rom 6:4; Co1 12:13; Gal 3:26-28; Heb 6:6; Pe1 3:21 Ephesians 4:6”