Paul addresses children first: they must obey their parents in the Lord, for this is right, and honor their father and mother, the first commandment with a promise, that it may go well with them and they may live long in the land. He asks fathers not to provoke their children to anger but to bring them up in the discipline and instruction of the Lord.
Then he speaks to slaves: they must obey their earthly masters with respect and sincerity of heart, as to Christ, not only when they are watched but as servants of Christ doing the will of God from the heart, knowing that the Lord will reward each one for whatever good he does. To masters he says to do the same toward them, giving up threats, because the Master of both is in heaven and shows no partiality.
Paul concludes with a call: be strong in the Lord and in the strength of his might. Put on the whole armor of God to stand against the schemes of the devil, for our struggle is not against flesh and blood but against the rulers, the authorities, the cosmic powers over this present darkness and the spiritual forces of evil in the heavenly places. With the whole armor they will be able to withstand in the evil day and, having done all, to stand firm.
Paul describes the pieces: the belt of truth, the breastplate of righteousness, feet shod with the readiness given by the gospel of peace, the shield of faith with which to extinguish the flaming darts of the evil one, the helmet of salvation and the sword of the Spirit, which is the word of God. He adds praying at all times in the Spirit with all perseverance, for all the saints and also for him, that he may boldly make known the mystery of the gospel, for which he is an ambassador in chains. Finally he sends Tychicus to inform and encourage them, and he closes with peace, love with faith and grace for all who love our Lord Jesus Christ with an undying love.