New Revised Standard Version
and would sleep and rise night and day, and the seed would sprout and grow, he does not know how.

Contemporary English Version
The farmer sleeps at night and is up and around during the day. Yet the seeds keep sprouting and growing, and he doesn't understand how.

New American Bible
and would sleep and rise night and day and the seed would sprout and grow, he knows not how.

Douay-Rheims Bible
And should sleep, and rise, night and day, and the seed should spring, and grow up whilst he knoweth not.

And should sleep, and rise, night and day, and the seed should spring, and grow up whilst he knoweth not.

and grow.

Ecclesiastes 8:17 And I understood that man can find no reason of all those works of God that are done under the sun: and the more he shall labour to seek, so much the less shall he find: yea, though the wise man shall say, that he knoweth it, he shall not be able to find it.

Ecclesiastes 11:5 As thou knowest not what is the way of the spirit, nor how the bones are joined together in the womb of her that is with child: so thou knowest not the works of God, who is the maker of all.

John 3:7,8 Wonder not that I said to thee: You must be born again. . . .

1 Corinthians 15:37,38 And that which thou sowest, thou sowest not the body that shall be: but bare grain, as of wheat, or of some of the rest. . . .

2 Thessalonians 1:3 We are bound to give thanks always to God for you, brethren, as it is fitting, because your faith groweth exceedingly and the charity of every one of you towards each other aboundeth.

2 Peter 3:18 But grow in grace and in the knowledge of our Lord and Saviour Jesus Christ. To him be glory both now and unto the day of eternity, Amen.