Then He took a little child and set him in the midst of them. And when He had taken him in His arms, He said to them, “Whoever receives one of these little children in My name receives Me; and whoever receives Me, receives not Me but Him who sent Me.” Mark 9:36-37
This is not about regrets. It is a lesson to the greatness-desiring disciples about who to receive as they go out spreading the gospel of Jesus Christ. A humble apostle would have no problem ministering to the children of a village. A great apostle might only go to the town square or center of whatever worship the town had, ignoring the children. And once the 'great' disciple ignored the children, he might go on to ignore the old folks, and the sick or infirm, and many other groups. And those Jesus sent out were to spread the good news of Him to all the people.
We all need salvation, and God wants none to be lost. Love to you in Christ our Lord!
Bucky