Battling the billows

Sermon synopsis: We’ve seen such a flood of false doctrine coming into the Church that sometimes Christians battle to discern between truth and error.
How do we battle these winds of doctrine that sweep through the church?

Eph 4:11 'It was he who gave some to be apostles, some to be prophets, some to be evangelists, and some to be pastors and teachers, 12 to prepare God’s people for works of service, so that the body of Christ may be built up 13 until we all reach unity in the faith and in the knowledge of the Son of God and become mature, attaining to the whole measure of the fullness of Christ.
14 Then we will no longer be infants, tossed back and forth by the waves, and blown here and there by every wind of teaching and by the cunning and craftiness of men in their deceitful scheming. 15 Instead, speaking the truth in love, we will in all things grow up into him who is the Head, that is, Christ. 16 From him the whole body, joined and held together by every supporting ligament, grows and builds itself up in love, as each part does its work.'