And he took their little children, one by one, and blessed them, and prayed unto the Father for them.. 3 Nephi 17:21

3 Nephi 17:11,21-22

And it came to pass that he commanded that their little children should be brought.
And when he had said these words, he wept, and the multitude bare record of it, and he took their little children, one by one, and blessed them, and prayed unto the Father for them.
And when he had done this he wept again.
3 Nephi 17:11,21-22

Read in scriptures: http://bit.ly/2a5uCvM