The Strength of the Christian: by Andrew Murray

Finally, my brethren, be strong in the Lord, and in the power of his might. Ephesians 6:10
Since we as Christians have no strength of our own, where may we get it? Paul had spoken of this power in the earlier part of Ephesians (1:17-20). He had prayed for God to give them the Spirit that they might know the greatness of His power which He displayed when He raised Christ from the dead. This is a literal truth: the greatness of His power which raised Christ from dead works in every believer. We may believe what Paul is saying without ever experiencing it. That is why Paul prays that God would teach us to believe in His mighty power.

Ephesians 3:16-17
That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man; That Christ may dwell in your hearts by faith; that ye, being rooted and grounded in love

Paul asks the Father to strengthen them by His Spirit, that Christ might dwell in their hearts by faith. Then in verse 20 he says, "Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us,"

Read over these Scriptures again and pray for God’s Spirit to make these words real to you. Believe in the divine power working in you. Pray that the Holy Spirit may reveal it to you. Appropriate the promise that God will show His power in your heart, supplying all your needs. It is clear that much time is needed with the Father and the Son, if you would experience the power of God within you.