Ephesians 3:18

May be able to comprehend with all saints what is the breadth, and length, and depth, and height;

May be able - even still further: [ exischuseete (G1840)] 'May be fully able.'

Breadth, and length, and depth, and height - namely, the full dimensions of the spiritual temple, answering to "the fullness of God" (Ephesians 3:19), to which the Church, according to its capacity, ought to correspond (cf. Ephesians 4:10; Ephesians 4:13 as to "the fullness of Christ"). The "breadth" implies Christ's worldwide love, embracing all men; the "length," its extension through all ages (Ephesians 3:21); the "depth," its profound wisdom, which no creature can fathom (Romans 11:33); the "height," its being beyond the reach of any foe to deprive us of it (Ephesians 4:8) (Bengel). I prefer "the breadth," etc., to refer to the whole mystery of free salvation in Christ for all, Gentile and Jew alike, just spoken of (Ephesians 3:3), which he now prays they may comprehend in all its vastness. As subsidiary to this, he adds, "and to know the love of Christ" (Ephesians 3:19) to us. Grotius understands depth and height of God's goodness raising us from the lowest depression to the greatest height.