For as many of you as have been baptized into Christ, have put on Christ....

And if ye be Christ's then are ye Abraham's seed, and heirs according to the promise." (Galatians 3:26,27,29) This is the seed, then, through whom the blessings will come to all the families of the earth.

Church means a gathered out class; and so the gospel age, that is to say, the period from Jesus' first coming until his second coming, is employed by Jehovah for the selection of the church, the seed of Abraham, through which blessings will come to all the remainder of mankind in God's due time.
[316]This same class is called the elect of God, according to his foreknowledge .-- 1 Peter 1:2.
[317]Again the Apostle likens the whole of the Christ to a living stone, saying: "Ye also, as living stones, are built up a spiritual house, an holy priesthood, to offer up sacrifices acceptable to God by Jesus Christ....

Behold, I lay in Zion a chief corner stone, elect, precious: and he that believeth on him shall not be confounded.

Unto you therefore which believe he is precious." (1 Peter 2:5-7) In earthly buildings there is no chief cornerstone; but in this building of God there is a chief cornerstone which is Christ Jesus.