And they brought unto him little children, that he should touch them: and the disciples rebuked them. But when Jesus saw it, he was moved with indignation, and said unto them, "Suffer the little children to come unto me; forbid them not: for of such is the kingdom of God. Verily I say unto you, Whosoever shall not receive the kingdom of God as a little child, he shall in no wise enter therein." And he took them in his arms, and blessed them, laying his hands upon them.
"SUFFER LITTLE CHILDREN TO COME UNTO ME": This command was given for all times. Parents, and those who represent them, ought to bring their children to Jesus; they ought to take care that they are, first of all, admitted into the Church by holy Baptism; that they learn to know and love Him by means of a Christian education; and that, as soon as they are capable of receiving it, they are united to Him by Holy Communion, and strengthened in virtue by the imposition of hands and anointing of Confirmation.
[From 'A Practical Commentary on Holy Scripture' by Bishop Knecht, D.D.]
(1899 Douay-Rheims Bible)