Matthew 18:3

Except ye be converted — The first step toward entering into the kingdom of grace, is to become as little children: lowly in heart, knowing yourselves utterly ignorant and helpless, and hanging wholly on your Father who is in heaven, for a supply of all your wants. We may farther assert, (though it is doubtful whether this text implies so much,) except ye be turned from darkness to light, and from the power of Satan to God:, except ye be entirely, inwardly changed, renewed in the image of God, ye cannot enter into the kingdom of glory. Thus must every man be converted in this life, or he can never enter into life eternal. Ye shall in no wise enter — So far from being great in it. Matthew 19:14.