‘Finally, be made powerful in the Lord and in the strength of his might.'
Our only hope for the future and our only means of victory against an implacable enemy is to be ‘made powerful in the Lord', to enjoy and experience the strength of the Lord Jesus Christ. It is His mighty strength within us by His indwelling that will enable us to overcome all obstacles. And as we walk in love (Ephesians 5:2), and in light (Ephesians 5:8), (both are necessary), this power will be at work in us. Love is the approach and attitude we have towards God and the world, light is our openness to God through His word and prayer, so that His light might shine in us and through us, dealing with anything that might diminish our strength in the Lord, and revealing to us His glory as we face the Foe.
‘Finally.' Bringing matters to a conclusion. Having described our position in Christ and having exhorted us to right behaviour Paul now closes by reminding us of our resources in Christ.
‘Be made powerful.' Without Him we are without strength for the battle ahead. He is the One Who can make us powerful through His resurrection life as we put on the armour of God.
‘In the Lord and in the strength of His might.' The source of our power is the indwelling Lord, Jesus Christ, our Lord and God, the One Who has been exalted, seated far above all, with everything in subjection under His feet (Ephesians 1:20-22). And it is His mighty strength that we can enjoy and experience as we look to Him to live through us (Galatians 2:20).