Ephesians 3:10

Principalities and powers. See on ch. 1:21. The universal purpose in redemption includes the vindication of the name and character of God, which have been challenged by Satan and questioned by angels (cf. on ch. 1:6). This is the greatest spectacle that heavenly intelligences can contemplate (cf. 1 Cor. 4:9). What must the course of history look like to them, as from their vantage point they can observe the interplay of forces and events?

In heavenly places. See on ch. 1:3.

Might be known. Rather, “might be made known,” “might be declared.”

By the church. Or, “through the church,” “by means of the church.” The church was intended to be a living demonstration of God’s wisdom, even as a recovered patient is a witness to the skill of the physician. Indeed, it may be said that the church is not so much an agent of the power and wisdom of God as it is a proof or evidence of it. The church makes its witness best when it draws upon all the gifts of all its members.

Manifold wisdom. Especially as manifested in the work of redemption. The wisdom of God is also shown in the manifold forms in the material world, in the complexities of the human mind, and in the innumerable methods He uses to reach men and effect their salvation. The full extent of this wisdom will not be understood until the plan of salvation is ended.