Obviously Rahab and Ruth could not have gone thru Jesus, since he had not come in the flesh yet when they were around.
But as the Roman Centurion and the Canaanite lady showed us, even if they could have, Jesus would still require them to bless Israel in some way first, before he would be willing to bless them.
Its all set in the protocol in Genesis 12:3.
You are using the earthen body that he used as a propmised demonstration. The earthen body of death it had no power. Jesus said clearly his flesh profits for zero or nothing . God is not a man .
He redeemed mankind by a work of His unseen Spirit as eternal God. The same power that worked in Jesus worked in Rahab, Ruth, Abraham, Abel, Jacob Isaac etc.
Two working together as one .The unseen father empowered the Son of man, Jesus seen. Just as with any born again believer. We cannot isolate Jesus or the father. Can't have one without the other.
We are saved by the unseen work of Christ's faith or called a labor of His love. His faith that works in us to both will and empower us to do his good pleasure. Nothing on our behalf could be added to it
Note. . (Faith Christ's ) Not of our own selves
Seest thou how
(Christ's) faith wrought with his
works,
(Christ's) and by works
(Christ's) was faith
(Christ's) made perfect? And the scripture was fulfilled which saith, Abraham believed God, and
it (Christ's) was imputed unto him for righteousness: and he was called the Friend of God. Ye see then how that by
works (Christ's) a man is justified, and not by faith
(Christ's) only. Likewise also was not
Rahab the harlot justified by
works (Christ's) , when she had received the messengers, and had sent them out another way? For as the
body without the spirit is dead, so faith
(Christ's) without works
(Christ's) is dead also. James 2:22-25
If we were to attribute His work of faith to or own selves then we have blasphemed the His power by which we are called .
James 2 :7 Do not they blaspheme that worthy
name by the which ye are called?
In that way our new faith belongs to
us but no
power of us.
2 Corinthians 4:7 But
we have this
treasure in
earthen vessels, that the
excellency of the
power may be
of God, and not of
us.
The imputed
power of
Christ not seen
faithfully working in
us .Our daily bread.