John Gill Commentary Mark 10:15

"Verily I say unto you, Whosoever shall not receive the kingdom of God as a little child, he shall in no wise enter therein." — Mark 10:15 (ASV)

Verily I say, to you
A form of speech used when our Lord was about to asseverate a thing, and assert something of moment and importance, and which he would have attended to.

Whosoever shall not receive the kingdom of God ;
the Gospel, and the mysteries of it:

as a little child ;
laying aside all pride and prejudice, attending to it with humility and meekness:

he shall not enter therein ;
he shall attain to no true spiritual knowledge of the Gospel; nor should he be admitted into a Gospel church state, and to the ordinances of it.