According to the WTS .... After the end of the 1,000 year reign of Jesus over the earth... those who stay loyal; only then are those humans granted the designation of Jesus's brothers, God's children.
This of course is pure nonsense. Sonship is experienced immediately upon acceptance of Christ as a substitution for your sin debt:
All these scriptures describe this condition in the present or past tense:
The Spirit Himself testifies with our spirit that we are children of God,
Because you are sons, God has sent forth the Spirit of His Son into our hearts, crying, "Abba! Father!"
For all who are being led by the Spirit of God, these are sons of God.
For you are all sons of God through faith in Christ Jesus.
But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name,
Yet the number of the sons of Israel Will be like the sand of the sea, Which cannot be measured or numbered; And in the place Where it is said to them, "You are not My people," It will be said to them, "You are the sons of the living God."
1 John 3:2
Beloved, now we are children of God, and it has not appeared as yet what we will be We know that when He appears, we will be like Him, because we will see Him just as He is.
for they cannot even die anymore, because they are like angels, and are sons of God, being sons of the resurrection.
For it was fitting for Him, for whom are all things, and through whom are all things, in bringing many sons to glory, to perfect the author of their salvation through sufferings.
and not for the nation only, but in order that He might also gather together into one the children of God who are scattered abroad.
Therefore you are no longer a slave, but a son; and if a son, then an heir through God.