1) Paul prays for the Ephesians to receive wisdom and revelation from God so that they may understand His plan and have hope, see God's riches, and understand His power.
2) The passage contrasts how believers were before and after salvation - before they were dead in sins and ruled by Satan, and after they are alive in Christ, ruled by the Spirit, and heirs with Him.
3) Salvation is by God's grace alone, not by any works or obedience to laws, as God is recreating believers into the image of Christ through His work in them.
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