Adoption » Is through Christ
But to as many as did receive and welcome Him, He gave the authority (power, privilege, right) to become the children of God, that is, to those who believe in (adhere to, trust in, and rely on) His name -- "
But when the proper time had fully come, God sent His Son, born of a woman, born subject to [the regulations of] the Law, To purchase the freedom of (to ransom, to redeem, to atone for) those who were subject to the Law, that we might be adopted and have sonship conferred upon us [and be recognized as God's sons].
Which He poured out [so] richly upon us through Jesus Christ our Savior.
He did this that He might clearly demonstrate through the ages to come the immeasurable (limitless, surpassing) riches of His free grace (His unmerited favor) in [His] kindness and goodness of heart toward us in Christ Jesus.
But when the goodness and loving-kindness of God our Savior to man [as man] appeared, He saved us, not because of any works of righteousness that we had done, but because of His own pity and mercy, by [the] cleansing [bath] of the new birth (regeneration) and renewing of the Holy Spirit, Which He poured out [so] richly upon us through Jesus Christ our Savior.