'Measure' in the Bible

which is His body, the fullness of Him who fills and completes all things in all [believers].

and [that you may come] to know [practically, through personal experience] the love of Christ which far surpasses [mere] knowledge [without experience], that you may be filled up [throughout your being] to all the fullness of God [so that you may have the richest experience of God’s presence in your lives, completely filled and flooded with God Himself].

Yet grace [God’s undeserved favor] was given to each one of us [not indiscriminately, but in different ways] in proportion to the measure of Christ’s [rich and abundant] gift.

until we all reach oneness in the faith and in the knowledge of the Son of God, [growing spiritually] to become a mature believer, reaching to the measure of the fullness of Christ [manifesting His spiritual completeness and exercising our spiritual gifts in unity].