ISB ~ Ephesians 4 v15

speaking the truth:Or, “doing the truth”. By bracing ourselves with the truth, we can resist the wind and waves of false teaching that unsettle the faith of immature believers. Paul is urging readers to grow in their knowledge of Christ (1:17; 4:23; Rom 12:2); otherwise their minds will remain childish, underdeveloped, and vulnerable to dangerous novelties that are contrary to the gospel (Eph 4:14). Here and elsewhere Paul insists that love is the surest means to build up the Church (4:16; 1 Cor 8:1; 13:1-13).