The age of the children here is irrelevant, Jesus was laying his hands upon them not baptizing them.
“Is that a phrase ever found in Scripture before? Why does Paul phrase it this way, rather than just, obey your parents?”
Obeying their parents was obedience to the Lord. Nothing is suggestive of baptism.
There simply is no support in Scripture for infant baptism or that of a child too young to be instructed as a disciple.
Disciple, baptism, teaching them all things Jesus commanded is the pattern.
As I said, the connection is there but not to those who do not want to see it.
They brought their children to Jesus, whole households were baptized.
The age of the children is not irrelevant and it is connected to the actions of the parents.
Again, there is also no Scriptural support that baptism was restricted to adults, period. When Scripture says whole households, there is no specifics given, period.
Parents in the Lord, it meant something to Paul to phrase it that way and not to just say, obey your parents as the Lord commanded in the Law.
No, he says parents in the Lord. As in parents IN the Lord. What did the Apostles teach? That those who were baptized were IN the Lord as told to us in Galatians, Corinthians and Romans.
We are baptized into Christ, into the one body, into His death and so will have a share of His resurrection. Never before had believers been In Him.