Ephesians 6:19

(19) That utterance may be given me, that I may open my mouth . . .—This hardly renders the original “that word may be given me in opening my mouth.” The “opening the mouth”—an expression always used of solemn and deliberate utterance—seems taken for granted. What the Apostle desires them to pray for is that “word may be given him”—“the word of wisdom and the word of knowledge, by the Spirit” (1 Corinthians 12:8), according to our Lord’s promise (Matthew 10:19-20), “It shall be given you in the same hour what you shall speak; for it is not ye that speak, but the Spirit of your Father that speaketh in you.” Then he adds as a consequence of this—to make known in plainness of speech the mystery of the gospel. For to make known a mystery in simplicity needs not only boldness to speak, but also the knowledge of the true word of God.

The mystery of the gospel.—The word “gospel” being used emphatically is, of course, the mystery of the new and universal grace of God to the Gentiles of which he speaks at large in Ephesians 3:1-10. This was “made known to him;” he desires inspiration “to make it known” to others.